Python capture stdout

Python write subprocess stdout stderr to file

with open("stdout.txt","wb") as out, open("stderr.txt","wb") as err:
    subprocess.Popen("ls",stdout=out,stderr=err)

Source: stackoverflow.com

Python capture stdout

from io import StringIO 
import sys

class Capturing(list):
    def __enter__(self):
        self._stdout = sys.stdout
        sys.stdout = self._stringio = StringIO()
        return self
    def __exit__(self, *args):
        self.extend(self._stringio.getvalue().splitlines())
        del self._stringio    # free up some memory
        sys.stdout = self._stdout
        
with Capturing() as output:
    print('hello world')

print('displays on screen')

with Capturing(output) as output:  # note the constructor argument
    print('hello world2')

print('done')
print('output:', output)

Source: stackoverflow.com

Similar codes

-1 vote234 views2 answers
This code is supposed to display "2 + 2 = 4" on the screen, but there is an error. Find the error in the code and fix it, so that the output is correct.
Python
0 vote198 views5 answers
How to count the iteration a list python
Python
0 vote256 views2 answers
Pandas read parquet from s3
Python
1 vote185 views1 answer
Emacs region indent python
Python
-3 votes205 views2 answers
Python list of characters
Python
0 vote195 views1 answer
Convert multidimentional numpy array to string and back
Python
23 votes211 views6 answers
Odd or even python
Python
0 vote179 views1 answer
Iterate over classes in module python
Python
0 vote265 views1 answer
Discord pycord add a URL button in a subclassed view
Python
1 vote179 views1 answer
Keyboardpython
Python