nameisnotdefined如何解决(name is not defined怎么解决)

nameisnotdefined如何解决(name is not defined怎么解决)

首页维修大全综合更新时间:2024-11-12 12:08:45

nameisnotdefined如何解决

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()

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