diff --git a/Include/codecs.h b/Include/codecs.h
index dff09e7..c503f5c 100644
--- a/Include/codecs.h
+++ b/Include/codecs.h
@@ -174,6 +174,8 @@
 /* replace the unicode encode error with backslash escapes (\x, \u and \U) */
 PyAPI_FUNC(PyObject *) PyCodec_BackslashReplaceErrors(PyObject *exc);
 
+extern const char *Py_hexdigits;
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/Modules/_codecsmodule.c b/Modules/_codecsmodule.c
index c9843c2..26c8788 100644
--- a/Modules/_codecsmodule.c
+++ b/Modules/_codecsmodule.c
@@ -162,7 +162,6 @@
 escape_encode(PyObject *self,
               PyObject *args)
 {
-    static const char *hexdigits = "0123456789abcdef";
     PyObject *str;
     Py_ssize_t size;
     Py_ssize_t newsize;
@@ -205,8 +204,8 @@
             else if (c < ' ' || c >= 0x7f) {
                 *p++ = '\\';
                 *p++ = 'x';
-                *p++ = hexdigits[(c & 0xf0) >> 4];
-                *p++ = hexdigits[c & 0xf];
+                *p++ = Py_hexdigits[(c & 0xf0) >> 4];
+                *p++ = Py_hexdigits[c & 0xf];
             }
             else
                 *p++ = c;
diff --git a/Modules/_hashopenssl.c b/Modules/_hashopenssl.c
index dd4317f..d37689e 100644
--- a/Modules/_hashopenssl.c
+++ b/Modules/_hashopenssl.c
@@ -201,13 +201,11 @@
 
     /* Make hex version of the digest */
     for(i=j=0; i<digest_size; i++) {
-        char c;
+        unsigned char c;
         c = (digest[i] >> 4) & 0xf;
-        c = (c>9) ? c+'a'-10 : c + '0';
-        hex_digest[j++] = c;
+        hex_digest[j++] = Py_hexdigits[c];
         c = (digest[i] & 0xf);
-        c = (c>9) ? c+'a'-10 : c + '0';
-        hex_digest[j++] = c;
+        hex_digest[j++] = Py_hexdigits[c];
     }
     retval = PyUnicode_FromStringAndSize(hex_digest, digest_size * 2);
     PyMem_Free(hex_digest);
diff --git a/Modules/_json.c b/Modules/_json.c
index dca3791..cafd5a9 100644
--- a/Modules/_json.c
+++ b/Modules/_json.c
@@ -175,18 +175,18 @@
                 Py_UCS4 v = c - 0x10000;
                 c = 0xd800 | ((v >> 10) & 0x3ff);
                 output[chars++] = 'u';
-                output[chars++] = "0123456789abcdef"[(c >> 12) & 0xf];
-                output[chars++] = "0123456789abcdef"[(c >>  8) & 0xf];
-                output[chars++] = "0123456789abcdef"[(c >>  4) & 0xf];
-                output[chars++] = "0123456789abcdef"[(c      ) & 0xf];
+                output[chars++] = Py_hexdigits[(c >> 12) & 0xf];
+                output[chars++] = Py_hexdigits[(c >>  8) & 0xf];
+                output[chars++] = Py_hexdigits[(c >>  4) & 0xf];
+                output[chars++] = Py_hexdigits[(c      ) & 0xf];
                 c = 0xdc00 | (v & 0x3ff);
                 output[chars++] = '\\';
             }
             output[chars++] = 'u';
-            output[chars++] = "0123456789abcdef"[(c >> 12) & 0xf];
-            output[chars++] = "0123456789abcdef"[(c >>  8) & 0xf];
-            output[chars++] = "0123456789abcdef"[(c >>  4) & 0xf];
-            output[chars++] = "0123456789abcdef"[(c      ) & 0xf];
+            output[chars++] = Py_hexdigits[(c >> 12) & 0xf];
+            output[chars++] = Py_hexdigits[(c >>  8) & 0xf];
+            output[chars++] = Py_hexdigits[(c >>  4) & 0xf];
+            output[chars++] = Py_hexdigits[(c      ) & 0xf];
     }
     return chars;
 }
diff --git a/Modules/_pickle.c b/Modules/_pickle.c
index 6a44b82..ad185a7 100644
--- a/Modules/_pickle.c
+++ b/Modules/_pickle.c
@@ -1776,7 +1776,6 @@
 static PyObject *
 raw_unicode_escape(PyObject *obj)
 {
-    static const char *hexdigits = "0123456789abcdef";
     PyObject *repr, *result;
     char *p;
     Py_ssize_t i, size, expandsize;
@@ -1809,23 +1808,23 @@
         if (ch >= 0x10000) {
             *p++ = '\\';
             *p++ = 'U';
-            *p++ = hexdigits[(ch >> 28) & 0xf];
-            *p++ = hexdigits[(ch >> 24) & 0xf];
-            *p++ = hexdigits[(ch >> 20) & 0xf];
-            *p++ = hexdigits[(ch >> 16) & 0xf];
-            *p++ = hexdigits[(ch >> 12) & 0xf];
-            *p++ = hexdigits[(ch >> 8) & 0xf];
-            *p++ = hexdigits[(ch >> 4) & 0xf];
-            *p++ = hexdigits[ch & 15];
+            *p++ = Py_hexdigits[(ch >> 28) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 24) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 20) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 16) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 12) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 8) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 4) & 0xf];
+            *p++ = Py_hexdigits[ch & 15];
         }
         /* Map 16-bit characters to '\uxxxx' */
         else if (ch >= 256 || ch == '\\' || ch == '\n') {
             *p++ = '\\';
             *p++ = 'u';
-            *p++ = hexdigits[(ch >> 12) & 0xf];
-            *p++ = hexdigits[(ch >> 8) & 0xf];
-            *p++ = hexdigits[(ch >> 4) & 0xf];
-            *p++ = hexdigits[ch & 15];
+            *p++ = Py_hexdigits[(ch >> 12) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 8) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 4) & 0xf];
+            *p++ = Py_hexdigits[ch & 15];
         }
         /* Copy everything else as-is */
         else
diff --git a/Modules/binascii.c b/Modules/binascii.c
index 19681b4..dc4fef5 100644
--- a/Modules/binascii.c
+++ b/Modules/binascii.c
@@ -1078,13 +1078,11 @@
 
     /* make hex version of string, taken from shamodule.c */
     for (i=j=0; i < arglen; i++) {
-        char c;
+        unsigned char c;
         c = (argbuf[i] >> 4) & 0xf;
-        c = (c>9) ? c+'a'-10 : c + '0';
-        retbuf[j++] = c;
+        retbuf[j++] = Py_hexdigits[c];
         c = argbuf[i] & 0xf;
-        c = (c>9) ? c+'a'-10 : c + '0';
-        retbuf[j++] = c;
+        retbuf[j++] = Py_hexdigits[c];
     }
     PyBuffer_Release(&parg);
     return retval;
diff --git a/Modules/md5module.c b/Modules/md5module.c
index b6ab5ca..86f602e 100644
--- a/Modules/md5module.c
+++ b/Modules/md5module.c
@@ -391,13 +391,11 @@
 
     /* Make hex version of the digest */
     for(i=j=0; i<MD5_DIGESTSIZE; i++) {
-        char c;
+        unsigned char c;
         c = (digest[i] >> 4) & 0xf;
-        c = (c>9) ? c+'a'-10 : c + '0';
-        hex_digest[j++] = c;
+        hex_digest[j++] = Py_hexdigits[c];
         c = (digest[i] & 0xf);
-        c = (c>9) ? c+'a'-10 : c + '0';
-        hex_digest[j++] = c;
+        hex_digest[j++] = Py_hexdigits[c];
     }
     return retval;
 }
diff --git a/Modules/sha1module.c b/Modules/sha1module.c
index d25aaea..30e5c50 100644
--- a/Modules/sha1module.c
+++ b/Modules/sha1module.c
@@ -367,13 +367,11 @@
 
     /* Make hex version of the digest */
     for(i=j=0; i<SHA1_DIGESTSIZE; i++) {
-        char c;
+        unsigned char c;
         c = (digest[i] >> 4) & 0xf;
-        c = (c>9) ? c+'a'-10 : c + '0';
-        hex_digest[j++] = c;
+        hex_digest[j++] = Py_hexdigits[c];
         c = (digest[i] & 0xf);
-        c = (c>9) ? c+'a'-10 : c + '0';
-        hex_digest[j++] = c;
+        hex_digest[j++] = Py_hexdigits[c];
     }
     return retval;
 }
diff --git a/Modules/sha256module.c b/Modules/sha256module.c
index fe2dcfa..f1ef329 100644
--- a/Modules/sha256module.c
+++ b/Modules/sha256module.c
@@ -460,13 +460,11 @@
 
     /* Make hex version of the digest */
     for(i=j=0; i<self->digestsize; i++) {
-        char c;
+        unsigned char c;
         c = (digest[i] >> 4) & 0xf;
-        c = (c>9) ? c+'a'-10 : c + '0';
-        hex_digest[j++] = c;
+        hex_digest[j++] = Py_hexdigits[c];
         c = (digest[i] & 0xf);
-        c = (c>9) ? c+'a'-10 : c + '0';
-        hex_digest[j++] = c;
+        hex_digest[j++] = Py_hexdigits[c];
     }
     return retval;
 }
diff --git a/Modules/sha512module.c b/Modules/sha512module.c
index 4177000..4f5a113 100644
--- a/Modules/sha512module.c
+++ b/Modules/sha512module.c
@@ -526,13 +526,11 @@
 
     /* Make hex version of the digest */
     for (i=j=0; i<self->digestsize; i++) {
-        char c;
+        unsigned char c;
         c = (digest[i] >> 4) & 0xf;
-        c = (c>9) ? c+'a'-10 : c + '0';
-        hex_digest[j++] = c;
+        hex_digest[j++] = Py_hexdigits[c];
         c = (digest[i] & 0xf);
-        c = (c>9) ? c+'a'-10 : c + '0';
-        hex_digest[j++] = c;
+        hex_digest[j++] = Py_hexdigits[c];
     }
     return retval;
 }
diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index cd35037..41ea2dd 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -850,7 +850,6 @@
 static PyObject *
 bytearray_repr(PyByteArrayObject *self)
 {
-    static const char *hexdigits = "0123456789abcdef";
     const char *quote_prefix = "bytearray(b";
     const char *quote_postfix = ")";
     Py_ssize_t length = Py_SIZE(self);
@@ -912,8 +911,8 @@
         else if (c < ' ' || c >= 0x7f) {
             *p++ = '\\';
             *p++ = 'x';
-            *p++ = hexdigits[(c & 0xf0) >> 4];
-            *p++ = hexdigits[c & 0xf];
+            *p++ = Py_hexdigits[(c & 0xf0) >> 4];
+            *p++ = Py_hexdigits[c & 0xf];
         }
         else
             *p++ = c;
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index fa0e8c2..17e31b9 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -564,7 +564,6 @@
 PyObject *
 PyBytes_Repr(PyObject *obj, int smartquotes)
 {
-    static const char *hexdigits = "0123456789abcdef";
     register PyBytesObject* op = (PyBytesObject*) obj;
     Py_ssize_t i, length = Py_SIZE(op);
     size_t newsize, squotes, dquotes;
@@ -620,8 +619,8 @@
         else if (c < ' ' || c >= 0x7f) {
             *p++ = '\\';
             *p++ = 'x';
-            *p++ = hexdigits[(c & 0xf0) >> 4];
-            *p++ = hexdigits[c & 0xf];
+            *p++ = Py_hexdigits[(c & 0xf0) >> 4];
+            *p++ = Py_hexdigits[c & 0xf];
         }
         else
             *p++ = c;
diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index 1c8a6a3..4e0fa7d 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -1058,7 +1058,7 @@
 char_from_hex(int x)
 {
     assert(0 <= x && x < 16);
-    return "0123456789abcdef"[x];
+    return Py_hexdigits[x];
 }
 
 static int
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 5d5bb9a..2ca271f 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -5943,8 +5943,6 @@
 
 */
 
-static const char *hexdigits = "0123456789abcdef";
-
 PyObject *
 PyUnicode_EncodeUnicodeEscape(const Py_UNICODE *s,
                               Py_ssize_t size)
@@ -6006,14 +6004,14 @@
         else if (ch >= 0x10000) {
             *p++ = '\\';
             *p++ = 'U';
-            *p++ = hexdigits[(ch >> 28) & 0x0000000F];
-            *p++ = hexdigits[(ch >> 24) & 0x0000000F];
-            *p++ = hexdigits[(ch >> 20) & 0x0000000F];
-            *p++ = hexdigits[(ch >> 16) & 0x0000000F];
-            *p++ = hexdigits[(ch >> 12) & 0x0000000F];
-            *p++ = hexdigits[(ch >> 8) & 0x0000000F];
-            *p++ = hexdigits[(ch >> 4) & 0x0000000F];
-            *p++ = hexdigits[ch & 0x0000000F];
+            *p++ = Py_hexdigits[(ch >> 28) & 0x0000000F];
+            *p++ = Py_hexdigits[(ch >> 24) & 0x0000000F];
+            *p++ = Py_hexdigits[(ch >> 20) & 0x0000000F];
+            *p++ = Py_hexdigits[(ch >> 16) & 0x0000000F];
+            *p++ = Py_hexdigits[(ch >> 12) & 0x0000000F];
+            *p++ = Py_hexdigits[(ch >> 8) & 0x0000000F];
+            *p++ = Py_hexdigits[(ch >> 4) & 0x0000000F];
+            *p++ = Py_hexdigits[ch & 0x0000000F];
             continue;
         }
 #else
@@ -6028,14 +6026,14 @@
                 ucs = (((ch & 0x03FF) << 10) | (ch2 & 0x03FF)) + 0x00010000;
                 *p++ = '\\';
                 *p++ = 'U';
-                *p++ = hexdigits[(ucs >> 28) & 0x0000000F];
-                *p++ = hexdigits[(ucs >> 24) & 0x0000000F];
-                *p++ = hexdigits[(ucs >> 20) & 0x0000000F];
-                *p++ = hexdigits[(ucs >> 16) & 0x0000000F];
-                *p++ = hexdigits[(ucs >> 12) & 0x0000000F];
-                *p++ = hexdigits[(ucs >> 8) & 0x0000000F];
-                *p++ = hexdigits[(ucs >> 4) & 0x0000000F];
-                *p++ = hexdigits[ucs & 0x0000000F];
+                *p++ = Py_hexdigits[(ucs >> 28) & 0x0000000F];
+                *p++ = Py_hexdigits[(ucs >> 24) & 0x0000000F];
+                *p++ = Py_hexdigits[(ucs >> 20) & 0x0000000F];
+                *p++ = Py_hexdigits[(ucs >> 16) & 0x0000000F];
+                *p++ = Py_hexdigits[(ucs >> 12) & 0x0000000F];
+                *p++ = Py_hexdigits[(ucs >> 8) & 0x0000000F];
+                *p++ = Py_hexdigits[(ucs >> 4) & 0x0000000F];
+                *p++ = Py_hexdigits[ucs & 0x0000000F];
                 continue;
             }
             /* Fall through: isolated surrogates are copied as-is */
@@ -6048,10 +6046,10 @@
         if (ch >= 256) {
             *p++ = '\\';
             *p++ = 'u';
-            *p++ = hexdigits[(ch >> 12) & 0x000F];
-            *p++ = hexdigits[(ch >> 8) & 0x000F];
-            *p++ = hexdigits[(ch >> 4) & 0x000F];
-            *p++ = hexdigits[ch & 0x000F];
+            *p++ = Py_hexdigits[(ch >> 12) & 0x000F];
+            *p++ = Py_hexdigits[(ch >> 8) & 0x000F];
+            *p++ = Py_hexdigits[(ch >> 4) & 0x000F];
+            *p++ = Py_hexdigits[ch & 0x000F];
         }
 
         /* Map special whitespace to '\t', \n', '\r' */
@@ -6072,8 +6070,8 @@
         else if (ch < ' ' || ch >= 0x7F) {
             *p++ = '\\';
             *p++ = 'x';
-            *p++ = hexdigits[(ch >> 4) & 0x000F];
-            *p++ = hexdigits[ch & 0x000F];
+            *p++ = Py_hexdigits[(ch >> 4) & 0x000F];
+            *p++ = Py_hexdigits[ch & 0x000F];
         }
 
         /* Copy everything else as-is */
@@ -6258,14 +6256,14 @@
         if (ch >= 0x10000) {
             *p++ = '\\';
             *p++ = 'U';
-            *p++ = hexdigits[(ch >> 28) & 0xf];
-            *p++ = hexdigits[(ch >> 24) & 0xf];
-            *p++ = hexdigits[(ch >> 20) & 0xf];
-            *p++ = hexdigits[(ch >> 16) & 0xf];
-            *p++ = hexdigits[(ch >> 12) & 0xf];
-            *p++ = hexdigits[(ch >> 8) & 0xf];
-            *p++ = hexdigits[(ch >> 4) & 0xf];
-            *p++ = hexdigits[ch & 15];
+            *p++ = Py_hexdigits[(ch >> 28) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 24) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 20) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 16) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 12) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 8) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 4) & 0xf];
+            *p++ = Py_hexdigits[ch & 15];
         }
         else
 #else
@@ -6280,14 +6278,14 @@
                     ucs = (((ch & 0x03FF) << 10) | (ch2 & 0x03FF)) + 0x00010000;
                     *p++ = '\\';
                     *p++ = 'U';
-                    *p++ = hexdigits[(ucs >> 28) & 0xf];
-                    *p++ = hexdigits[(ucs >> 24) & 0xf];
-                    *p++ = hexdigits[(ucs >> 20) & 0xf];
-                    *p++ = hexdigits[(ucs >> 16) & 0xf];
-                    *p++ = hexdigits[(ucs >> 12) & 0xf];
-                    *p++ = hexdigits[(ucs >> 8) & 0xf];
-                    *p++ = hexdigits[(ucs >> 4) & 0xf];
-                    *p++ = hexdigits[ucs & 0xf];
+                    *p++ = Py_hexdigits[(ucs >> 28) & 0xf];
+                    *p++ = Py_hexdigits[(ucs >> 24) & 0xf];
+                    *p++ = Py_hexdigits[(ucs >> 20) & 0xf];
+                    *p++ = Py_hexdigits[(ucs >> 16) & 0xf];
+                    *p++ = Py_hexdigits[(ucs >> 12) & 0xf];
+                    *p++ = Py_hexdigits[(ucs >> 8) & 0xf];
+                    *p++ = Py_hexdigits[(ucs >> 4) & 0xf];
+                    *p++ = Py_hexdigits[ucs & 0xf];
                     continue;
                 }
                 /* Fall through: isolated surrogates are copied as-is */
@@ -6299,10 +6297,10 @@
         if (ch >= 256) {
             *p++ = '\\';
             *p++ = 'u';
-            *p++ = hexdigits[(ch >> 12) & 0xf];
-            *p++ = hexdigits[(ch >> 8) & 0xf];
-            *p++ = hexdigits[(ch >> 4) & 0xf];
-            *p++ = hexdigits[ch & 15];
+            *p++ = Py_hexdigits[(ch >> 12) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 8) & 0xf];
+            *p++ = Py_hexdigits[(ch >> 4) & 0xf];
+            *p++ = Py_hexdigits[ch & 15];
         }
         /* Copy everything else as-is */
         else
@@ -11648,8 +11646,8 @@
         else if (ch < ' ' || ch == 0x7F) {
             PyUnicode_WRITE(okind, odata, o++, '\\');
             PyUnicode_WRITE(okind, odata, o++, 'x');
-            PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 4) & 0x000F]);
-            PyUnicode_WRITE(okind, odata, o++, hexdigits[ch & 0x000F]);
+            PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 4) & 0x000F]);
+            PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[ch & 0x000F]);
         }
 
         /* Copy ASCII characters as-is */
@@ -11667,30 +11665,30 @@
                 if (ch <= 0xff) {
                     PyUnicode_WRITE(okind, odata, o++, '\\');
                     PyUnicode_WRITE(okind, odata, o++, 'x');
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 4) & 0x000F]);
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[ch & 0x000F]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 4) & 0x000F]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[ch & 0x000F]);
                 }
                 /* Map 21-bit characters to '\U00xxxxxx' */
                 else if (ch >= 0x10000) {
                     PyUnicode_WRITE(okind, odata, o++, '\\');
                     PyUnicode_WRITE(okind, odata, o++, 'U');
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 28) & 0xF]);
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 24) & 0xF]);
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 20) & 0xF]);
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 16) & 0xF]);
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 12) & 0xF]);
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 8) & 0xF]);
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 4) & 0xF]);
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[ch & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 28) & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 24) & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 20) & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 16) & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 12) & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 8) & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 4) & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[ch & 0xF]);
                 }
                 /* Map 16-bit characters to '\uxxxx' */
                 else {
                     PyUnicode_WRITE(okind, odata, o++, '\\');
                     PyUnicode_WRITE(okind, odata, o++, 'u');
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 12) & 0xF]);
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 8) & 0xF]);
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[(ch >> 4) & 0xF]);
-                    PyUnicode_WRITE(okind, odata, o++, hexdigits[ch & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 12) & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 8) & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[(ch >> 4) & 0xF]);
+                    PyUnicode_WRITE(okind, odata, o++, Py_hexdigits[ch & 0xF]);
                 }
             }
             /* Copy characters as-is */
diff --git a/Python/codecs.c b/Python/codecs.c
index 79dfe89..006d288 100644
--- a/Python/codecs.c
+++ b/Python/codecs.c
@@ -11,6 +11,8 @@
 #include "Python.h"
 #include <ctype.h>
 
+const char *Py_hexdigits = "0123456789abcdef";
+
 /* --- Codec Registry ----------------------------------------------------- */
 
 /* Import the standard encodings package which will register the first
@@ -673,8 +675,6 @@
     }
 }
 
-static const char *hexdigits = "0123456789abcdef";
-
 PyObject *PyCodec_BackslashReplaceErrors(PyObject *exc)
 {
 #ifndef Py_UNICODE_WIDE
@@ -731,22 +731,22 @@
             }
             if (c >= 0x00010000) {
                 *outp++ = 'U';
-                *outp++ = hexdigits[(c>>28)&0xf];
-                *outp++ = hexdigits[(c>>24)&0xf];
-                *outp++ = hexdigits[(c>>20)&0xf];
-                *outp++ = hexdigits[(c>>16)&0xf];
-                *outp++ = hexdigits[(c>>12)&0xf];
-                *outp++ = hexdigits[(c>>8)&0xf];
+                *outp++ = Py_hexdigits[(c>>28)&0xf];
+                *outp++ = Py_hexdigits[(c>>24)&0xf];
+                *outp++ = Py_hexdigits[(c>>20)&0xf];
+                *outp++ = Py_hexdigits[(c>>16)&0xf];
+                *outp++ = Py_hexdigits[(c>>12)&0xf];
+                *outp++ = Py_hexdigits[(c>>8)&0xf];
             }
             else if (c >= 0x100) {
                 *outp++ = 'u';
-                *outp++ = hexdigits[(c>>12)&0xf];
-                *outp++ = hexdigits[(c>>8)&0xf];
+                *outp++ = Py_hexdigits[(c>>12)&0xf];
+                *outp++ = Py_hexdigits[(c>>8)&0xf];
             }
             else
                 *outp++ = 'x';
-            *outp++ = hexdigits[(c>>4)&0xf];
-            *outp++ = hexdigits[c&0xf];
+            *outp++ = Py_hexdigits[(c>>4)&0xf];
+            *outp++ = Py_hexdigits[c&0xf];
         }
 
         restuple = Py_BuildValue("(On)", res, end);
diff --git a/Python/traceback.c b/Python/traceback.c
index 551f9d6..44358ed 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -463,12 +463,11 @@
 static void
 dump_hexadecimal(int width, unsigned long value, int fd)
 {
-    const char *hexdigits = "0123456789abcdef";
     int len;
     char buffer[sizeof(unsigned long) * 2 + 1];
     len = 0;
     do {
-        buffer[len] = hexdigits[value & 15];
+        buffer[len] = Py_hexdigits[value & 15];
         value >>= 4;
         len++;
     } while (len < width || value);