如何导入使用当前文件中定义的变量的函数?
main.py
from functions import a
x = 1
print(a())
函数.py
def a():
return x
错误消息
Traceback (most recent call last):
File "c:\Users\Test\.vscode\extensions\ms-python.python-2019.4.11987\pythonFiles\ptvsd_launcher.py", line 43, in <module>
main(ptvsdArgs)
File "c:\Users\Test\.vscode\extensions\ms-python.python-2019.4.11987\pythonFiles\lib\python\ptvsd\__main__.py", line 410, in main
run()
File "c:\Users\Test\.vscode\extensions\ms-python.python-2019.4.11987\pythonFiles\lib\python\ptvsd\__main__.py", line 291, in run_file
runpy.run_path(target, run_name='__main__')
File "C:\Users\Test\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 263, in run_path
pkg_name=pkg_name, script_name=fname)
File "C:\Users\Test\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 96, in _run_module_code
mod_name, mod_spec, pkg_name, script_name)
File "C:\Users\Test\AppData\Local\Programs\Python\Python37\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "c:\Users\Test\Google Drive\Dev\Test\main.py", line 5, in <module>
print(a())
File "c:\Users\Test\Google Drive\Dev\Test\functions.py", line 2, in a
return x
NameError: name 'x' is not defined
最佳答案
正如另一个答案所指出的,由于 Python 作用域变量的方式,这将不起作用。
因此,我建议您将所有这些变量移动到一个单独的文件中,例如constants.py
:
main.py
from functions import a
print(a())
constants.py
X = 1
functions.py
from constants import X
def a():
return X
然后,运行 import main
打印 1
。
关于python - 在 Python 中导入函数,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/55885578/