crackfortran: changed string.lowercase to string.ascii_lowercase

Compatibility with Python3, which dosn't have string.lowercase.

1 files changed, 1 insertions, 1 deletions

diff --git a/numpy/f2py/crackfortran.py b/numpy/f2py/crackfortran.py
index 34b6192e4..d0d8aa8fa 100755
--- a/numpy/f2py/crackfortran.py
+++ b/numpy/f2py/crackfortran.py
@@ -2402,7 +2402,7 @@ def expr2name(a, block, args=[]):
         na='e_'
         for c in a:
             c = c.lower()
-            if c not in string.lowercase+string.digits: c='_'
+            if c not in string.ascii_lowercase+string.digits: c='_'
             na=na+c
         if na[-1]=='_': na=na+'e'
         else: na=na+'_e'