BugFix: Avoid string interpolation for building URLs

The string interpolation previously used was leading to a URL of the
form `http://localhost:9080api/rqtl/compute` rather than
`http://localhost:9080/api/rqtl/compute`.

1 files changed, 3 insertions, 1 deletions

diff --git a/gn2/wqflask/marker_regression/rqtl_mapping.py b/gn2/wqflask/marker_regression/rqtl_mapping.py
index b7739228..571935cb 100644
--- a/gn2/wqflask/marker_regression/rqtl_mapping.py
+++ b/gn2/wqflask/marker_regression/rqtl_mapping.py
@@ -8,6 +8,7 @@ from typing import Dict
 from typing import List
 from typing import Optional
 from typing import TextIO
+from urllib.parse import urljoin
 
 import numpy as np
 
@@ -54,7 +55,8 @@ def run_rqtl(trait_name, vals, samples, dataset, pair_scan, mapping_scale, model
     if perm_strata_list:
         post_data["pstrata"] = True
 
-    rqtl_output = requests.post(GN3_LOCAL_URL + "api/rqtl/compute", data=post_data).json()
+    rqtl_output = requests.post(urljoin(GN3_LOCAL_URL, "api/rqtl/compute"),
+                                data=post_data).json()
     if num_perm > 0:
         return rqtl_output['perm_results'], rqtl_output['suggestive'], rqtl_output['significant'], rqtl_output['results']
     else: