build: fix for python 3.7

Author: thebaptiste

jinja2_humanize_extension/__init__.py

@@ -1,3 +1,4 @@
+import sys
 from jinja2.ext import Extension
 from humanize import naturalsize
 
@@ -177,7 +178,13 @@ def __init__(self, environment):
         environment.filters["humanize_metric"] = humanize_metric
         environment.filters["humanize_activate"] = humanize_activate
         environment.filters["humanize_deactivate"] = humanize_deactivate
-        environment.filters["humanize_thousands_separator"] = (
-            humanize_thousands_separator
-        )
         environment.filters["humanize_decimal_separator"] = humanize_decimal_separator
+        environment.filters["humanize_thousands_separator"] = humanize_thousands_separator
+        if (sys.version_info.minor) > 7:
+            environment.filters["humanize_thousands_separator"] = (
+                humanize_thousands_separator
+            )
+        else:
+            environment.filters[
+                "humanize_thousands_separator"
+            ] = humanize_thousands_separator