如何忽略 Python 中的弃用警告

Question

I keep getting this :

DeprecationWarning: integer argument expected, got float

How do I make this message go away? Is there a way to avoid warnings in Python?

Answer 1

You should just fix your code but just in case,

import warnings
warnings.filterwarnings("ignore", category=DeprecationWarning) 

Answer 2

I had these:

/home/eddyp/virtualenv/lib/python2.6/site-packages/Twisted-8.2.0-py2.6-linux-x86_64.egg/twisted/persisted/sob.py:12:
DeprecationWarning: the md5 module is deprecated; use hashlib instead import os, md5, sys

/home/eddyp/virtualenv/lib/python2.6/site-packages/Twisted-8.2.0-py2.6-linux-x86_64.egg/twisted/python/filepath.py:12:
DeprecationWarning: the sha module is deprecated; use the hashlib module instead import sha

Fixed it with:

import warnings

with warnings.catch_warnings():
    warnings.filterwarnings("ignore",category=DeprecationWarning)
    import md5, sha

yourcode()

Now you still get all the other DeprecationWarning s, but not the ones caused by:

import md5, sha

Answer 3

From documentation of the warnings module :

 #!/usr/bin/env python -W ignore::DeprecationWarning

If you're on Windows: pass -W ignore::DeprecationWarning as an argument to Python. Better though to resolve the issue, by casting to int .

(Note that in Python 3.2, deprecation warnings are ignored by default.)

Answer 4

None of these answers worked for me so I will post my way to solve this. I use the following at the beginning of my main.py script and it works fine.

---

Use the following as it is (copy-paste it):

def warn(*args, **kwargs):
    pass
import warnings
warnings.warn = warn

Example:

import "blabla"
import "blabla"

def warn(*args, **kwargs):
    pass
import warnings
warnings.warn = warn

# more code here...
# more code here...

---

Answer 5

I found the cleanest way to do this (especially on windows) is by adding the following to C:\\Python26\\Lib\\site-packages\\sitecustomize.py:

import warnings
warnings.filterwarnings("ignore", category=DeprecationWarning)

Note that I had to create this file. Of course, change the path to python if yours is different.

Answer 6

Docker Solution

• Disable ALL warnings before running the python application
  • You can disable your dockerized tests as well

ENV PYTHONWARNINGS="ignore::DeprecationWarning"

Answer 7

Python 3

Just write below lines that are easy to remember before writing your code:

import warnings

warnings.filterwarnings("ignore")

Answer 8

Pass the correct arguments? :P

On the more serious note, you can pass the argument -Wi::DeprecationWarning on the command line to the interpreter to ignore the deprecation warnings.

Answer 9

When you want to ignore warnings only in functions you can do the following.

import warnings
from functools import wraps


def ignore_warnings(f):
    @wraps(f)
    def inner(*args, **kwargs):
        with warnings.catch_warnings(record=True) as w:
            warnings.simplefilter("ignore")
            response = f(*args, **kwargs)
        return response
    return inner

@ignore_warnings
def foo(arg1, arg2):
    ...
    write your code here without warnings
    ...

@ignore_warnings
def foo2(arg1, arg2, arg3):
    ...
    write your code here without warnings
    ...

Just add the @ignore_warnings decorator on the function you want to ignore all warnings

Answer 10

For python 3, just write below codes to ignore all warnings.

from warnings import filterwarnings
filterwarnings("ignore")

Answer 11

Convert the argument to int. It's as simple as

int(argument)

Answer 12

Try the below code if you're Using Python3:

import sys

if not sys.warnoptions:
    import warnings
    warnings.simplefilter("ignore")

or try this...

import warnings

def fxn():
    warnings.warn("deprecated", DeprecationWarning)

with warnings.catch_warnings():
    warnings.simplefilter("ignore")
    fxn()

or try this...

import warnings
warnings.filterwarnings("ignore")

Answer 13

如果您知道自己在做什么，另一种方法是简单地找到警告您的文件（文件的路径显示在警告信息中），注释生成警告的行。

Answer 14

If you are using logging ( https://docs.python.org/3/library/logging.html ) to format or redirect your ERROR, NOTICE, and DEBUG messages, you can redirect the WARNINGS from the warning system to the logging system:

logging.captureWarnings(True)

See https://docs.python.org/3/library/warnings.html and https://docs.python.org/3/library/logging.html#logging.captureWarnings

In my case, I was formatting all the exceptions with the logging system, but warnings (eg scikit-learn) were not affected.

Answer 15

Not to beat you up about it but you are being warned that what you are doing will likely stop working when you next upgrade python. Convert to int and be done with it.

BTW. You can also write your own warnings handler. Just assign a function that does nothing. How to redirect python warnings to a custom stream?

Answer 16

注释掉以下文件中的警告行：

lib64/python2.7/site-packages/cryptography/__init__.py