Fix: flow analysis crashed when using in combination with different modules.

test/completion/flow_analysis.py

@@ -238,3 +238,20 @@ else:
     s = str()
 #? str()
 possible_recursion_error(s)
+
+
+# -----------------
+# In combination with imports
+# -----------------
+
+from import_tree import flow_import
+
+if 1 == flow_import.env:
+    a = 1
+elif 2 == flow_import.env:
+    a = ''
+elif 3 == flow_import.env:
+    a = 1.0
+
+#? int() str()
+a