Pythonceval.c
#define NAME_ERROR_MSG
"name '%.200s' is not defined----XL"
[hdp@cmd testcpy]$ /usr/local/bin/python3.9 Python 3.9.0a1+ (default, Nov 21 2019, 11:38:36) [GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux Type "help", "copyright", "credits" or "license" for more information. >>> print(d) Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'd' is not defined----XL >>>