Merge branch 'build/python3-migration' of github.com:BonfaceKilz/genenetwork2 into build/python3-migration

5 files changed, 140 insertions, 141 deletions

diff --git a/wqflask/base/GeneralObject.py b/wqflask/base/GeneralObject.py
index 0fccaab3..0122ee32 100644
--- a/wqflask/base/GeneralObject.py
+++ b/wqflask/base/GeneralObject.py
@@ -33,7 +33,7 @@ class GeneralObject:
 
     def __init__(self, *args, **kw):
         self.contents = list(args)
-        for name, value in kw.items():
+        for name, value in list(kw.items()):
             setattr(self, name, value)
 
     def __setitem__(self, key, value):
@@ -50,16 +50,17 @@ class GeneralObject:
 
     def __str__(self):
         s = ''
-        for key in self.__dict__.keys():
+        for key in list(self.__dict__.keys()):
             if key != 'contents':
                 s += '%s = %s\n' % (key, self.__dict__[key])
         return s
 
     def __repr__(self):
         s = ''
-        for key in self.__dict__.keys():
+        for key in list(self.__dict__.keys()):
             s += '%s = %s\n' % (key, self.__dict__[key])
         return s
 
-    def __cmp__(self, other):
-        return len(self.__dict__.keys()).__cmp__(len(other.__dict__.keys()))
+    def __eq__(self, other):
+        return (len(list(self.__dict__.keys())) ==
+                len(list(other.__dict__.keys())))
diff --git a/wqflask/base/data_set.py b/wqflask/base/data_set.py
index afffe780..295f5c48 100644
--- a/wqflask/base/data_set.py
+++ b/wqflask/base/data_set.py
@@ -18,13 +18,14 @@
 #
 # This module is used by GeneNetwork project (www.genenetwork.org)
 
-from __future__ import absolute_import, print_function, division
 from db.call import fetchall, fetchone, fetch1
 from utility.logger import getLogger
 from utility.tools import USE_GN_SERVER, USE_REDIS, flat_files, flat_file_exists, GN2_BASE_URL
 from db.gn_server import menu_main
 from pprint import pformat as pf
-from MySQLdb import escape_string as escape
+from utility.db_tools import escape
+from utility.db_tools import mescape
+from utility.db_tools import create_in_clause
 from maintenance import get_group_samplelists
 from utility.tools import locate, locate_ignore_error, flat_files
 from utility import gen_geno_ob
@@ -34,7 +35,6 @@ from utility import webqtlUtil
 from db import webqtlDatabaseFunction
 from base import species
 from base import webqtlConfig
-import reaper
 from flask import Flask, g
 import os
 import math
@@ -45,7 +45,7 @@ import codecs
 import json
 import requests
 import gzip
-import cPickle as pickle
+import pickle as pickle
 import itertools
 
 from redis import Redis
@@ -207,20 +207,6 @@ def create_datasets_list():
     return datasets
 
 
-def create_in_clause(items):
-    """Create an in clause for mysql"""
-    in_clause = ', '.join("'{}'".format(x) for x in mescape(*items))
-    in_clause = '( {} )'.format(in_clause)
-    return in_clause
-
-
-def mescape(*items):
-    """Multiple escape"""
-    escaped = [escape(str(item)) for item in items]
-    #logger.debug("escaped is:", escaped)
-    return escaped
-
-
 class Markers(object):
     """Todo: Build in cacheing so it saves us reading the same file more than once"""
 
@@ -255,12 +241,12 @@ class Markers(object):
         logger.debug("length of self.markers:", len(self.markers))
         logger.debug("length of p_values:", len(p_values))
 
-        if type(p_values) is list:
+        if isinstance(p_values, list):
             # THIS IS only needed for the case when we are limiting the number of p-values calculated
             # if len(self.markers) > len(p_values):
             #    self.markers = self.markers[:len(p_values)]
 
-            for marker, p_value in itertools.izip(self.markers, p_values):
+            for marker, p_value in zip(self.markers, p_values):
                 if not p_value:
                     continue
                 marker['p_value'] = float(p_value)
@@ -271,7 +257,7 @@ class Markers(object):
                     marker['lod_score'] = -math.log10(marker['p_value'])
                     # Using -log(p) for the LRS; need to ask Rob how he wants to get LRS from p-values
                     marker['lrs_value'] = -math.log10(marker['p_value']) * 4.61
-        elif type(p_values) is dict:
+        elif isinstance(p_values, dict):
             filtered_markers = []
             for marker in self.markers:
                 #logger.debug("marker[name]", marker['name'])
@@ -457,12 +443,7 @@ class DatasetGroup(object):
                 full_filename = str(locate(self.genofile, 'genotype'))
         else:
             full_filename = str(locate(self.name + '.geno', 'genotype'))
-
-        if use_reaper:
-            genotype_1 = reaper.Dataset()
-            genotype_1.read(full_filename)
-        else:
-            genotype_1 = gen_geno_ob.genotype(full_filename)
+        genotype_1 = gen_geno_ob.genotype(full_filename)
 
         if genotype_1.type == "group" and self.parlist:
             genotype_2 = genotype_1.add(
@@ -705,7 +686,7 @@ class DataSet(object):
             else:
                 query = "SELECT {}.Name,".format(escape(dataset_type))
             data_start_pos = 1
-            query += string.join(temp, ', ')
+            query += ', '.join(temp)
             query += ' FROM ({}, {}XRef, {}Freeze) '.format(*mescape(dataset_type,
                                                                      self.type,
                                                                      self.type))
@@ -1051,9 +1032,9 @@ class MrnaAssayDataSet(DataSet):
 
             # XZ, 12/08/2008: description
             # XZ, 06/05/2009: Rob asked to add probe target description
-            description_string = unicode(
+            description_string = str(
                 str(this_trait.description).strip(codecs.BOM_UTF8), 'utf-8')
-            target_string = unicode(
+            target_string = str(
                 str(this_trait.probe_target_description).strip(codecs.BOM_UTF8), 'utf-8')
 
             if len(description_string) > 1 and description_string != 'None':
diff --git a/wqflask/base/mrna_assay_tissue_data.py b/wqflask/base/mrna_assay_tissue_data.py
index 6fec5dcd..f1929518 100644
--- a/wqflask/base/mrna_assay_tissue_data.py
+++ b/wqflask/base/mrna_assay_tissue_data.py
@@ -1,5 +1,3 @@
-from __future__ import absolute_import, print_function, division
-
 import collections
 
 from flask import g
@@ -7,9 +5,8 @@ from flask import g
 from utility import db_tools
 from utility import Bunch
 
-from MySQLdb import escape_string as escape
+from utility.db_tools import escape
 
-from pprint import pformat as pf
 
 from utility.logger import getLogger
 logger = getLogger(__name__ )
@@ -92,4 +89,4 @@ class MrnaAssayTissueData(object):
                 else:
                     symbol_values_dict[result.Symbol.lower()].append(result.value)
 
-        return symbol_values_dict
\ No newline at end of file
+        return symbol_values_dict
diff --git a/wqflask/base/species.py b/wqflask/base/species.py
index 6d99af65..2771d116 100644
--- a/wqflask/base/species.py
+++ b/wqflask/base/species.py
@@ -1,14 +1,7 @@
-from __future__ import absolute_import, print_function, division
-
 import collections
 
 from flask import Flask, g
 
-#from MySQLdb import escape_string as escape
-
-from utility import Bunch
-
-from pprint import pformat as pf
 
 from utility.logger import getLogger
 logger = getLogger(__name__ )
@@ -59,4 +52,4 @@ class Chromosomes(object):
         results = g.db.execute(query).fetchall()
 
         for item in results:
-            self.chromosomes[item.OrderId] = IndChromosome(item.Name, item.Length)
\ No newline at end of file
+            self.chromosomes[item.OrderId] = IndChromosome(item.Name, item.Length)
diff --git a/wqflask/base/trait.py b/wqflask/base/trait.py
index 8f8b5b70..d0c79119 100644
--- a/wqflask/base/trait.py
+++ b/wqflask/base/trait.py
@@ -1,39 +1,30 @@
-from __future__ import absolute_import, division, print_function
-
-import os
-import string
-import resource
-import codecs
 import requests
-import random
-import urllib
+import simplejson as json
+from wqflask import app
 
 from base import webqtlConfig
 from base.webqtlCaseData import webqtlCaseData
 from base.data_set import create_dataset
-from db import webqtlDatabaseFunction
-from utility import webqtlUtil
 from utility import hmac
 from utility.authentication_tools import check_resource_availability
-from utility.tools import GN2_BASE_URL, GN_VERSION
-from utility.redis_tools import get_redis_conn, get_resource_id, get_resource_info
-Redis = get_redis_conn()
+from utility.tools import GN2_BASE_URL
+from utility.redis_tools import get_redis_conn, get_resource_id
 
-from wqflask import app
+from utility.db_tools import escape
 
-import simplejson as json
-from MySQLdb import escape_string as escape
-from pprint import pformat as pf
-
-from flask import Flask, g, request, url_for, redirect, make_response, render_template
+from flask import g, request, url_for
 
 from utility.logger import getLogger
-logger = getLogger(__name__ )
+
+logger = getLogger(__name__)
+
+Redis = get_redis_conn()
+
 
 def create_trait(**kw):
-    assert bool(kw.get('dataset')) != bool(kw.get('dataset_name')), "Needs dataset ob. or name";
+    assert bool(kw.get('dataset')) != bool(
+        kw.get('dataset_name')), "Needs dataset ob. or name"
 
-    permitted = True
     if kw.get('name'):
         if kw.get('dataset_name'):
             if kw.get('dataset_name') != "Temp":
@@ -43,18 +34,23 @@ def create_trait(**kw):
 
         if kw.get('dataset_name') != "Temp":
             if dataset.type == 'Publish':
-                permissions = check_resource_availability(dataset, kw.get('name'))
+                permissions = check_resource_availability(
+                    dataset, kw.get('name'))
             else:
                 permissions = check_resource_availability(dataset)
 
     if "view" in permissions['data']:
         the_trait = GeneralTrait(**kw)
         if the_trait.dataset.type != "Temp":
-            the_trait = retrieve_trait_info(the_trait, the_trait.dataset, get_qtl_info=kw.get('get_qtl_info'))
+            the_trait = retrieve_trait_info(
+                the_trait,
+                the_trait.dataset,
+                get_qtl_info=kw.get('get_qtl_info'))
         return the_trait
     else:
         return None
 
+
 class GeneralTrait(object):
     """
     Trait class defines a trait in webqtl, can be either Microarray,
@@ -64,12 +60,17 @@ class GeneralTrait(object):
 
     def __init__(self, get_qtl_info=False, get_sample_info=True, **kw):
         # xor assertion
-        assert bool(kw.get('dataset')) != bool(kw.get('dataset_name')), "Needs dataset ob. or name";
-        self.name = kw.get('name')                 # Trait ID, ProbeSet ID, Published ID, etc.
+        assert bool(kw.get('dataset')) != bool(
+            kw.get('dataset_name')), "Needs dataset ob. or name"
+        # Trait ID, ProbeSet ID, Published ID, etc.
+        self.name = kw.get('name')
         if kw.get('dataset_name'):
             if kw.get('dataset_name') == "Temp":
                 temp_group = self.name.split("_")[2]
-                self.dataset = create_dataset(dataset_name = "Temp", dataset_type = "Temp", group_name = temp_group)
+                self.dataset = create_dataset(
+                    dataset_name="Temp",
+                    dataset_type="Temp",
+                    group_name=temp_group)
             else:
                 self.dataset = create_dataset(kw.get('dataset_name'))
         else:
@@ -77,7 +78,8 @@ class GeneralTrait(object):
         self.cellid = kw.get('cellid')
         self.identification = kw.get('identification', 'un-named trait')
         self.haveinfo = kw.get('haveinfo', False)
-        self.sequence = kw.get('sequence')         # Blat sequence, available for ProbeSet
+        # Blat sequence, available for ProbeSet
+        self.sequence = kw.get('sequence')
         self.data = kw.get('data', {})
         self.view = True
 
@@ -103,9 +105,10 @@ class GeneralTrait(object):
             elif len(name2) == 3:
                 self.dataset, self.name, self.cellid = name2
 
-        # Todo: These two lines are necessary most of the time, but perhaps not all of the time
-        # So we could add a simple if statement to short-circuit this if necessary
-        if get_sample_info != False:
+        # Todo: These two lines are necessary most of the time, but
+        # perhaps not all of the time So we could add a simple if
+        # statement to short-circuit this if necessary
+        if get_sample_info is not False:
             self = retrieve_sample_data(self, self.dataset)
 
     def export_informative(self, include_variance=0):
@@ -118,14 +121,14 @@ class GeneralTrait(object):
         vals = []
         the_vars = []
         sample_aliases = []
-        for sample_name, sample_data in self.data.items():
-            if sample_data.value != None:
-                if not include_variance or sample_data.variance != None:
+        for sample_name, sample_data in list(self.data.items()):
+            if sample_data.value is not None:
+                if not include_variance or sample_data.variance is not None:
                     samples.append(sample_name)
                     vals.append(sample_data.value)
                     the_vars.append(sample_data.variance)
                     sample_aliases.append(sample_data.name2)
-        return  samples, vals, the_vars, sample_aliases
+        return samples, vals, the_vars, sample_aliases
 
     @property
     def description_fmt(self):
@@ -153,8 +156,8 @@ class GeneralTrait(object):
 
         alias = 'Not available'
         if getattr(self, "alias", None):
-            alias = string.replace(self.alias, ";", " ")
-            alias = string.join(string.split(alias), ", ")
+            alias = self.alias.replace(";", " ")
+            alias = ", ".join(alias.split())
 
         return alias
 
@@ -164,12 +167,17 @@ class GeneralTrait(object):
 
         alias = 'Not available'
         if self.symbol:
-            human_response = requests.get(GN2_BASE_URL + "gn3/gene/aliases/" + self.symbol.upper())
-            mouse_response = requests.get(GN2_BASE_URL + "gn3/gene/aliases/" + self.symbol.capitalize())
-            other_response = requests.get(GN2_BASE_URL + "gn3/gene/aliases/" + self.symbol.lower())
+            human_response = requests.get(
+                GN2_BASE_URL + "gn3/gene/aliases/" + self.symbol.upper())
+            mouse_response = requests.get(
+                GN2_BASE_URL + "gn3/gene/aliases/" + self.symbol.capitalize())
+            other_response = requests.get(
+                GN2_BASE_URL + "gn3/gene/aliases/" + self.symbol.lower())
 
             if human_response and mouse_response and other_response:
-                alias_list = json.loads(human_response.content) + json.loads(mouse_response.content) + json.loads(other_response.content)
+                alias_list = json.loads(human_response.content) + json.loads(
+                    mouse_response.content) + \
+                    json.loads(other_response.content)
 
                 filtered_aliases = []
                 seen = set()
@@ -183,33 +191,34 @@ class GeneralTrait(object):
 
         return alias
 
-
     @property
     def location_fmt(self):
         '''Return a text formatted location
 
-        While we're at it we set self.location in case we need it later (do we?)
+        While we're at it we set self.location in case we need it
+        later (do we?)
 
         '''
 
         if self.chr and self.mb:
-            self.location = 'Chr %s @ %s Mb'  % (self.chr,self.mb)
+            self.location = 'Chr %s @ %s Mb' % (self.chr, self.mb)
         elif self.chr:
             self.location = 'Chr %s @ Unknown position' % (self.chr)
         else:
             self.location = 'Not available'
 
         fmt = self.location
-        ##XZ: deal with direction
+        # XZ: deal with direction
         if self.strand_probe == '+':
             fmt += (' on the plus strand ')
         elif self.strand_probe == '-':
             fmt += (' on the minus strand ')
 
         return fmt
-        
+
+
 def retrieve_sample_data(trait, dataset, samplelist=None):
-    if samplelist == None:
+    if samplelist is None:
         samplelist = []
 
     if dataset.type == "Temp":
@@ -225,16 +234,19 @@ def retrieve_sample_data(trait, dataset, samplelist=None):
             all_samples_ordered = dataset.group.all_samples_ordered()
             for i, item in enumerate(results):
                 try:
-                    trait.data[all_samples_ordered[i]] = webqtlCaseData(all_samples_ordered[i], float(item))
+                    trait.data[all_samples_ordered[i]] = webqtlCaseData(
+                        all_samples_ordered[i], float(item))
                 except:
                     pass
         else:
             for item in results:
                 name, value, variance, num_cases, name2 = item
                 if not samplelist or (samplelist and name in samplelist):
-                    trait.data[name] = webqtlCaseData(*item)   #name, value, variance, num_cases)
+                    # name, value, variance, num_cases)
+                    trait.data[name] = webqtlCaseData(*item)
     return trait
 
+
 @app.route("/trait/get_sample_data")
 def get_sample_data():
     params = request.args
@@ -250,7 +262,8 @@ def get_sample_data():
         trait_dict['group'] = trait_ob.dataset.group.name
         trait_dict['tissue'] = trait_ob.dataset.tissue
         trait_dict['species'] = trait_ob.dataset.group.species
-        trait_dict['url'] = url_for('show_trait_page', trait_id = trait, dataset = dataset)
+        trait_dict['url'] = url_for(
+            'show_trait_page', trait_id=trait, dataset=dataset)
         trait_dict['description'] = trait_ob.description_display
         if trait_ob.dataset.type == "ProbeSet":
             trait_dict['symbol'] = trait_ob.symbol
@@ -260,22 +273,27 @@ def get_sample_data():
                 trait_dict['pubmed_link'] = trait_ob.pubmed_link
             trait_dict['pubmed_text'] = trait_ob.pubmed_text
 
-        return json.dumps([trait_dict, {key: value.value for key, value in trait_ob.data.iteritems() }])
+        return json.dumps([trait_dict, {key: value.value for
+                                        key, value in list(
+                                            trait_ob.data.items())}])
     else:
         return None
-    
+
+
 def jsonable(trait):
     """Return a dict suitable for using as json
 
     Actual turning into json doesn't happen here though"""
 
-    dataset = create_dataset(dataset_name = trait.dataset.name, dataset_type = trait.dataset.type, group_name = trait.dataset.group.name)
-    
+    dataset = create_dataset(dataset_name=trait.dataset.name,
+                             dataset_type=trait.dataset.type,
+                             group_name=trait.dataset.group.name)
+
     if dataset.type == "ProbeSet":
         return dict(name=trait.name,
                     symbol=trait.symbol,
                     dataset=dataset.name,
-                    dataset_name = dataset.shortname,
+                    dataset_name=dataset.shortname,
                     description=trait.description_display,
                     mean=trait.mean,
                     location=trait.location_repr,
@@ -287,7 +305,7 @@ def jsonable(trait):
         if trait.pubmed_id:
             return dict(name=trait.name,
                         dataset=dataset.name,
-                        dataset_name = dataset.shortname,
+                        dataset_name=dataset.shortname,
                         description=trait.description_display,
                         abbreviation=trait.abbreviation,
                         authors=trait.authors,
@@ -300,7 +318,7 @@ def jsonable(trait):
         else:
             return dict(name=trait.name,
                         dataset=dataset.name,
-                        dataset_name = dataset.shortname,
+                        dataset_name=dataset.shortname,
                         description=trait.description_display,
                         abbreviation=trait.abbreviation,
                         authors=trait.authors,
@@ -312,19 +330,20 @@ def jsonable(trait):
     elif dataset.type == "Geno":
         return dict(name=trait.name,
                     dataset=dataset.name,
-                    dataset_name = dataset.shortname,
+                    dataset_name=dataset.shortname,
                     location=trait.location_repr
                     )
     else:
         return dict()
 
+
 def jsonable_table_row(trait, dataset_name, index):
     """Return a list suitable for json and intended to be displayed in a table
 
     Actual turning into json doesn't happen here though"""
 
     dataset = create_dataset(dataset_name)
-    
+
     if dataset.type == "ProbeSet":
         if trait.mean == "":
             mean = "N/A"
@@ -336,11 +355,13 @@ def jsonable_table_row(trait, dataset_name, index):
             additive = "%.3f" % round(float(trait.additive), 2)
         return ['<input type="checkbox" name="searchResult" class="checkbox trait_checkbox" value="' + hmac.data_hmac('{}:{}'.format(str(trait.name), dataset.name)) + '">',
                 index,
-                '<a href="/show_trait?trait_id='+str(trait.name)+'&dataset='+dataset.name+'">'+str(trait.name)+'</a>',
+                '<a href="/show_trait?trait_id=' +
+                str(trait.name)+'&dataset='+dataset.name +
+                '">'+str(trait.name)+'</a>',
                 trait.symbol,
                 trait.description_display,
                 trait.location_repr,
-                mean, 
+                mean,
                 trait.LRS_score_repr,
                 trait.LRS_location_repr,
                 additive]
@@ -352,7 +373,9 @@ def jsonable_table_row(trait, dataset_name, index):
         if trait.pubmed_id:
             return ['<input type="checkbox" name="searchResult" class="checkbox trait_checkbox" value="' + hmac.data_hmac('{}:{}'.format(str(trait.name), dataset.name)) + '">',
                     index,
-                    '<a href="/show_trait?trait_id='+str(trait.name)+'&dataset='+dataset.name+'">'+str(trait.name)+'</a>',
+                    '<a href="/show_trait?trait_id=' +
+                    str(trait.name)+'&dataset='+dataset.name +
+                    '">'+str(trait.name)+'</a>',
                     trait.description_display,
                     trait.authors,
                     '<a href="' + trait.pubmed_link + '">' + trait.pubmed_text + '</href>',
@@ -362,7 +385,9 @@ def jsonable_table_row(trait, dataset_name, index):
         else:
             return ['<input type="checkbox" name="searchResult" class="checkbox trait_checkbox" value="' + hmac.data_hmac('{}:{}'.format(str(trait.name), dataset.name)) + '">',
                     index,
-                    '<a href="/show_trait?trait_id='+str(trait.name)+'&dataset='+dataset.name+'">'+str(trait.name)+'</a>',
+                    '<a href="/show_trait?trait_id=' +
+                    str(trait.name)+'&dataset='+dataset.name +
+                    '">'+str(trait.name)+'</a>',
                     trait.description_display,
                     trait.authors,
                     trait.pubmed_text,
@@ -372,7 +397,9 @@ def jsonable_table_row(trait, dataset_name, index):
     elif dataset.type == "Geno":
         return ['<input type="checkbox" name="searchResult" class="checkbox trait_checkbox" value="' + hmac.data_hmac('{}:{}'.format(str(trait.name), dataset.name)) + '">',
                 index,
-                '<a href="/show_trait?trait_id='+str(trait.name)+'&dataset='+dataset.name+'">'+str(trait.name)+'</a>',
+                '<a href="/show_trait?trait_id=' +
+                str(trait.name)+'&dataset='+dataset.name +
+                '">'+str(trait.name)+'</a>',
                 trait.location_repr]
     else:
         return dict()
@@ -383,14 +410,16 @@ def retrieve_trait_info(trait, dataset, get_qtl_info=False):
 
     resource_id = get_resource_id(dataset, trait.name)
     if dataset.type == 'Publish':
-        the_url = "http://localhost:8080/run-action?resource={}&user={}&branch=data&action=view".format(resource_id, g.user_session.user_id)
+        the_url = "http://localhost:8080/run-action?resource={}&user={}&branch=data&action=view".format(
+            resource_id, g.user_session.user_id)
     else:
-        the_url = "http://localhost:8080/run-action?resource={}&user={}&branch=data&action=view&trait={}".format(resource_id, g.user_session.user_id, trait.name)
+        the_url = "http://localhost:8080/run-action?resource={}&user={}&branch=data&action=view&trait={}".format(
+            resource_id, g.user_session.user_id, trait.name)
 
     try:
         response = requests.get(the_url).content
         trait_info = json.loads(response)
-    except: #ZS: I'm assuming the trait is viewable if the try fails for some reason; it should never reach this point unless the user has privileges, since that's dealt with in create_trait
+    except:  # ZS: I'm assuming the trait is viewable if the try fails for some reason; it should never reach this point unless the user has privileges, since that's dealt with in create_trait
         if dataset.type == 'Publish':
             query = """
                     SELECT
@@ -419,8 +448,8 @@ def retrieve_trait_info(trait, dataset, get_qtl_info=False):
             logger.sql(query)
             trait_info = g.db.execute(query).fetchone()
 
-        #XZ, 05/08/2009: Xiaodong add this block to use ProbeSet.Id to find the probeset instead of just using ProbeSet.Name
-        #XZ, 05/08/2009: to avoid the problem of same probeset name from different platforms.
+        # XZ, 05/08/2009: Xiaodong add this block to use ProbeSet.Id to find the probeset instead of just using ProbeSet.Name
+        # XZ, 05/08/2009: to avoid the problem of same probeset name from different platforms.
         elif dataset.type == 'ProbeSet':
             display_fields_string = ', ProbeSet.'.join(dataset.display_fields)
             display_fields_string = 'ProbeSet.' + display_fields_string
@@ -433,14 +462,14 @@ def retrieve_trait_info(trait, dataset, get_qtl_info=False):
                             ProbeSetFreeze.Name = '%s' AND
                             ProbeSet.Name = '%s'
                     """ % (escape(display_fields_string),
-                        escape(dataset.name),
-                        escape(str(trait.name)))
+                           escape(dataset.name),
+                           escape(str(trait.name)))
             logger.sql(query)
             trait_info = g.db.execute(query).fetchone()
-        #XZ, 05/08/2009: We also should use Geno.Id to find marker instead of just using Geno.Name
+        # XZ, 05/08/2009: We also should use Geno.Id to find marker instead of just using Geno.Name
         # to avoid the problem of same marker name from different species.
         elif dataset.type == 'Geno':
-            display_fields_string = string.join(dataset.display_fields,',Geno.')
+            display_fields_string = ',Geno.'.join(dataset.display_fields)
             display_fields_string = 'Geno.' + display_fields_string
             query = """
                     SELECT %s
@@ -451,21 +480,21 @@ def retrieve_trait_info(trait, dataset, get_qtl_info=False):
                             GenoFreeze.Name = '%s' AND
                             Geno.Name = '%s'
                     """ % (escape(display_fields_string),
-                        escape(dataset.name),
-                        escape(trait.name))
+                           escape(dataset.name),
+                           escape(trait.name))
             logger.sql(query)
             trait_info = g.db.execute(query).fetchone()
-        else: #Temp type
+        else:  # Temp type
             query = """SELECT %s FROM %s WHERE Name = %s"""
             logger.sql(query)
             trait_info = g.db.execute(query,
-                                    (string.join(dataset.display_fields,','),
-                                                dataset.type, trait.name)).fetchone()
+                                      ','.join(dataset.display_fields),
+                                      dataset.type, trait.name).fetchone()
 
     if trait_info:
         trait.haveinfo = True
         for i, field in enumerate(dataset.display_fields):
-            holder =  trait_info[i]
+            holder = trait_info[i]
             setattr(trait, field, holder)
 
         if dataset.type == 'Publish':
@@ -478,9 +507,9 @@ def retrieve_trait_info(trait, dataset, get_qtl_info=False):
 
             description = trait.post_publication_description
 
-            #If the dataset is confidential and the user has access to confidential
-            #phenotype traits, then display the pre-publication description instead
-            #of the post-publication description
+            # If the dataset is confidential and the user has access to confidential
+            # phenotype traits, then display the pre-publication description instead
+            # of the post-publication description
             if trait.confidential:
                 trait.abbreviation = trait.pre_publication_abbreviation
                 trait.description_display = trait.pre_publication_description
@@ -491,10 +520,6 @@ def retrieve_trait_info(trait, dataset, get_qtl_info=False):
                 else:
                     trait.description_display = ""
 
-            trait.abbreviation = unicode(str(trait.abbreviation).strip(codecs.BOM_UTF8), 'utf-8', errors="replace")
-            trait.description_display = unicode(str(trait.description_display).strip(codecs.BOM_UTF8), 'utf-8', errors="replace")
-            trait.authors = unicode(str(trait.authors).strip(codecs.BOM_UTF8), 'utf-8', errors="replace")
-
             if not trait.year.isdigit():
                 trait.pubmed_text = "N/A"
             else:
@@ -504,8 +529,8 @@ def retrieve_trait_info(trait, dataset, get_qtl_info=False):
                 trait.pubmed_link = webqtlConfig.PUBMEDLINK_URL % trait.pubmed_id
 
         if dataset.type == 'ProbeSet' and dataset.group:
-            description_string = unicode(str(trait.description).strip(codecs.BOM_UTF8), 'utf-8')
-            target_string = unicode(str(trait.probe_target_description).strip(codecs.BOM_UTF8), 'utf-8')
+            description_string = trait.description
+            target_string = trait.probe_target_description
 
             if str(description_string or "") != "" and description_string != 'None':
                 description_display = description_string
@@ -522,15 +547,17 @@ def retrieve_trait_info(trait, dataset, get_qtl_info=False):
 
             trait.location_repr = 'N/A'
             if trait.chr and trait.mb:
-                trait.location_repr = 'Chr%s: %.6f' % (trait.chr, float(trait.mb))
+                trait.location_repr = 'Chr%s: %.6f' % (
+                    trait.chr, float(trait.mb))
 
         elif dataset.type == "Geno":
             trait.location_repr = 'N/A'
             if trait.chr and trait.mb:
-                trait.location_repr = 'Chr%s: %.6f' % (trait.chr, float(trait.mb))
+                trait.location_repr = 'Chr%s: %.6f' % (
+                    trait.chr, float(trait.mb))
 
         if get_qtl_info:
-            #LRS and its location
+            # LRS and its location
             trait.LRS_score_repr = "N/A"
             trait.LRS_location_repr = "N/A"
             trait.locus = trait.locus_chr = trait.locus_mb = trait.lrs = trait.pvalue = trait.additive = ""
@@ -605,6 +632,6 @@ def retrieve_trait_info(trait, dataset, get_qtl_info=False):
                 if str(trait.lrs or "") != "":
                     trait.LRS_score_repr = LRS_score_repr = '%3.1f' % trait.lrs
     else:
-        raise KeyError, `trait.name`+' information is not found in the database.'
-        
+        raise KeyError(repr(trait.name) +
+                       ' information is not found in the database.')
     return trait