Changing default encoding of Python?

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I have many "can't encode" and "can't decode" problems with Python when I run my applications from the console. But in the Eclipse PyDev IDE, the default character encoding is set to UTF-8, and I'm fine.

I searched around for setting the default encoding, and people say that Python deletes the sys.setdefaultencoding function on startup, and we can not use it.

So what's the best solution for it?

Here is a simpler method (hack) that gives you back the setdefaultencoding() function that was deleted from sys:

import sys
# sys.setdefaultencoding() does not exist, here!
reload(sys)  # Reload does the trick!

(Note for Python 3.4+: reload() is in the importlib library.)

This is not a safe thing to do, though: this is obviously a hack, since sys.setdefaultencoding() is purposely removed from sys when Python starts. Reenabling it and changing the default encoding can break code that relies on ASCII being the default (this code can be third-party, which would generally make fixing it impossible or dangerous).

Change python 3.7 default encoding from cp1252 to cp65001 aka , You need to change stdout and stderr stream and change it's encoding. Like this: import sys. import io. sys.stdout = io. Changing default encoding of Python? I have many "can't encode" and "can't decode" problems with Python when I run my applications from the console. But in the Eclipse PyDev IDE, the default character encoding is set to UTF-8 , and I'm fine.

If you get this error when you try to pipe/redirect output of your script

UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-5: ordinal not in range(128)

Just export PYTHONIOENCODING in console and then run your code.


set python default encoding to utf-8 � GitHub, Right now Python uses UTF-8 for the FS encoding but sticks to ASCII for the default encoding :( >>> import sys >>> sys.getdefaultencoding()� According to Python 3 documentation for open(), the default encoding for a text file is from locale.getpreferredencoding() if the encoding arg is not supplied. I want this default value to be utf-8 for a project of mine, no matter what OS it’s running on (currently, it’s always UTF-8 for Linux, but not for Windows).

A) To control sys.getdefaultencoding() output:

python -c 'import sys; print(sys.getdefaultencoding())'



echo "import sys; sys.setdefaultencoding('utf-16-be')" >


PYTHONPATH=".:$PYTHONPATH" python -c 'import sys; print(sys.getdefaultencoding())'


You could put your higher in your PYTHONPATH.

Also you might like to try reload(sys).setdefaultencoding by @EOL

B) To control stdin.encoding and stdout.encoding you want to set PYTHONIOENCODING:

python -c 'import sys; print(sys.stdin.encoding, sys.stdout.encoding)'

ascii ascii


PYTHONIOENCODING="utf-16-be" python -c 'import sys; 
print(sys.stdin.encoding, sys.stdout.encoding)'

utf-16-be utf-16-be

Finally: you can use A) or B) or both!

How to set the default encoding to UTF-8 in Python?, How about changing default encoding for open() to UTF-8, from Python 3.9 (or even from 3.8)? People who programs with Python uses UTF-8� Hi, all. Microsoft changed default text encoding of notepad.exe to UTF-8 from 2019 May Update! I propose to change Python’s default text encoding too, from 2021. I believe 2021 is not too early for this change. (If we release 3.9 in 2020, this PEP will applied to 3.10, although deprecation warning is raised from 3.8) Abstract Currently, TextIOWrapper uses locale.getpreferredencoding(False

Starting with PyDev 3.4.1, the default encoding is not being changed anymore. See this ticket for details.

For earlier versions a solution is to make sure PyDev does not run with UTF-8 as the default encoding. Under Eclipse, run dialog settings ("run configurations", if I remember correctly); you can choose the default encoding on the common tab. Change it to US-ASCII if you want to have these errors 'early' (in other words: in your PyDev environment). Also see an original blog post for this workaround.

Use UTF-8 as default text file encoding?, A character is represented on a screen or on paper by a set of graphical elements The default encoding for Python source code is UTF-8, so you can simply� First: reload(sys) and setting some random default encoding just regarding the need of an output terminal stream is bad practice.reload often changes things in sys which have been put in place depending on the environment - e.g. sys.stdin/stdout streams, sys.excepthook, etc.

Regarding python2 (and python2 only), some of the former answers rely on using the following hack:

import sys
reload(sys)  # Reload is a hack

It is discouraged to use it (check this or this)

In my case, it come with a side-effect: I'm using ipython notebooks, and once I run the code the ´print´ function no longer works. I guess there would be solution to it, but still I think using the hack should not be the correct option.

After trying many options, the one that worked for me was using the same code in the, where that piece of code is meant to be. After evaluating that module, the setdefaultencoding function is removed from sys.

So the solution is to append to file /usr/lib/python2.7/ the code:

import sys

When I use virtualenvwrapper the file I edit is ~/.virtualenvs/venv-name/lib/python2.7/

And when I use with python notebooks and conda, it is ~/anaconda2/lib/python2.7/

Unicode HOWTO — Python 3.8.5 documentation, This sequence needs to be represented as a set of bytes (meaning, values from 0 –255) in For example, Python's default encoding is the 'ascii' encoding. So if we add 2nd UTF-8 mode, changing only default text encoding to “UTF-8” whould be helpful to them. I think it is the best short term solution. But when thinking long term, most Python users in Python community will go “always UTF-8” world more by this option, leaving Python users outside of community.

PEP 597 -- Soft deprecation of default encoding, So they created a function to set the defaultencoding when Python started in order to experiment with different settings. The function they� Today Python is converging on using UTF-8: Python on MacOS has used UTF-8 for several versions, and Python 3.6 switched to using UTF-8 on Windows as well. On Unix systems, there will only be a filesystem encoding if you’ve set the LANG or LC_CTYPE environment variables; if you haven’t, the default encoding is again UTF-8.

Unicode HOWTO — Python 2.7.18 documentation, Review from Character sets and encoding in the wild This doesn't seem like that big of a change, but it makes a lot of things Just Work that used to be� PEP 528: Change Windows console encoding to UTF-8. But the default encoding for open() is still whatever Python manages to infer from the environment. It appears that 3.7 will add an (opt-in!) mode where the environmental locale encoding is ignored, and everything is all UTF-8 all the time (except for specific cases where Windows uses UTF-16, I

Why sys.setdefaultencoding() will break code – The Ramblings, Encoding and Decoding in Python 3. Python 3’s str type is meant to represent human-readable text and can contain any Unicode character. The bytes type, conversely, represents binary data, or sequences of raw bytes, that do not intrinsically have an encoding attached to it. Encoding and decoding is the process of going from one to the other: