TypeError: expected str, bytes or os.PathLike object, not NoneType
时间: 2023-10-24 22:11:49 浏览: 42
This error occurs when a function or method is expecting a string, bytes, or a file path but is instead receiving a value of `NoneType`, which represents the absence of a value.
To fix this error, you need to ensure that the variable or argument being passed to the function is not `None`. You can do this by checking if the value is `None` before passing it to the function.
For example:
```
def my_function(file_path):
if file_path is not None:
with open(file_path, 'r') as f:
# do something with the file
else:
print("Error: file path cannot be None")
# call the function with a file path
my_function('path/to/file.txt')
# call the function with None
my_function(None)
```
In this example, the `my_function` function checks if the `file_path` argument is not `None` before attempting to open the file. If the value is `None`, it prints an error message.