Python尝试...除了命令行[重复]

Question

如何在从 bash 调用的 Python 单行中使用 try...except？

python3 -c "try: import foo\nexcept ModuleNotFoundError: print('no foo')"

  File "<string>", line 1
    try: import foo\nexcept ModuleNotFoundError: print('no foo')
                                                               ^
SyntaxError: unexpected character after line continuation character

Answer 1

你可以这样做：

$ python -c "
> try:
>     import foo
> except ModuleNotFoundError:
>     print('no foo')
> "
Traceback (most recent call last):
  File "<string>", line 4, in <module>
NameError: name 'ModuleNotFoundError' is not defined

您可能应该改用ImportError。