added a script to expand tabs to spaces for PEP 8 compliance

Author: jdagilliland

expand_tabs.py

@@ -0,0 +1,28 @@
+import os
+import re
+
+reg_pyfile=re.compile(r'.*\.py$',re.I)
+
+def expand_tabs(file0):
+    '''
+    This function takes the name of a python source file, expands all tabs to 4 spaces (for
+PEP 8 compliance), and rewrites the file in place.
+    '''
+    str_file_contents=open(file0,'rb').read()
+    str_pep_contents=str_file_contents.replace('\x09',4*'\x20')
+    open(file0,'wb').write(str_pep_contents)
+    return None
+
+def pepify_directory(path_root):
+    for (path,subdir,lst_file) in os.walk(path_root):
+        for file0 in (file1 for file1 in lst_file if reg_pyfile.match(file1)):
+            expand_tabs(os.path.join(path,file0))
+            print(os.path.join(path,file0))
+            pass
+        pass
+    return None
+
+if __name__=='__main__':
+    pepify_directory('.')
+    pass
+