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-rw-r--r--Modules/binascii.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Modules/binascii.c b/Modules/binascii.c
index ad5e1b1..340ec9c 100644
--- a/Modules/binascii.c
+++ b/Modules/binascii.c
@@ -1135,7 +1135,7 @@ This function is also available as \"hexlify()\".");
static int
to_int(int c)
{
- if (isdigit(c))
+ if (Py_ISDIGIT(c))
return c - '0';
else {
if (Py_ISUPPER(c))