Add some normalizer tests about imports.

test/normalizer_issue_files/E40.py

@@ -0,0 +1,39 @@
+#: E401:7
+import os, sys
+# Okay
+import os
+import sys
+
+from subprocess import Popen, PIPE
+
+from myclass import MyClass
+from foo.bar.yourclass import YourClass
+
+import myclass
+import foo.bar.yourclass
+# All Okay from here until the definition of VERSION
+__all__ = ['abc']
+
+import foo
+__version__ = "42"
+
+import foo
+__author__ = "Simon Gomizelj"
+
+import foo
+try:
+    import foo
+except ImportError:
+    pass
+else:
+    print('imported foo')
+finally:
+    print('made attempt to import foo')
+
+import bar
+VERSION = '1.2.3'
+
+#: E402
+import foo
+#: E402
+import foo