关于这个问题,这个问题通常是由于变量或函数名未定义引起的。要解决此问题,请确保您输入的名称与声明的名称相同,并且在使用之前已经声明。
如果您正在使用外部库或框架,请确保正确导入并使用正确的名称。
如果问题仍然存在,请检查代码中是否有语法错误或其他错误,并尝试使用调试工具进行调试。
name is not defined解决方法:
python版本3.11源码:
poem = '''
Programming is fun
When the work is done
if you wanna make your work also fun:
use Python!
'''
f = file('poem.txt', 'w') # open for 'w'riting
f.write(poem) # write text to file
f.close() # close the file
f = file('poem.txt')
# if no mode is specified, 'r'ead mode is assumed by default
while True:
line = f.readline()
if len(line) == 0: # Zero length indicates EOF
break
print (line),
# Notice comma to avoid automatic newline added by Python
f.close() # close the file
错误提示:
Traceback (most recent call last):
File "C:/Python31/004.py", line 8, in
f = file('poem.txt', 'w') # open for 'w'riting
NameError: name 'file' is not defined
解决办法:file()改为open()