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-rw-r--r--Lib/string.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/string.py b/Lib/string.py
index 92158ee..e449c20 100644
--- a/Lib/string.py
+++ b/Lib/string.py
@@ -475,7 +475,7 @@ def zfill(x, width):
n = len(s)
if n >= width: return s
sign = ''
- if s[0] in ('-', '+'):
+ if s[:1] in ('-', '+'):
sign, s = s[0], s[1:]
return sign + '0'*(width-n) + s