Popen does not show part of the data

[Arkantr]

Hi! It's my code

ommand_line = 'git log --oneline'
process = subprocess.Popen(command_line, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
output = process.communicate()[0].decode("utf-8")
print(output )

I expect to see for example

Output:
6934123 (HEAD -> master, tag: v1.5, origin/master, origin/HEAD) no message
e839345 (tag: v1.4) no message
717c567 e
f7c8543 merge

But I see

Output:
6934123 no message
e839345 no message
717c567 e
f7c8543 merge

Can i get first result?

[nilamo]

Popen.communicate() doesn't modify stdout in any way, it just pipes it to you. So either the command you're running is different from how you got the first output, OR some of that output wasn't in stdout, and was actually in stderr. Have you checked to see if stderr has any content?

[Arkantr]

Popen.communicate() doesn't modify stdout in any way, it just pipes it to you. So either the command you're running is different from how you got the first output, OR some of that output wasn't in stdout, and was actually in stderr. Have you checked to see if stderr has any content?

I input same command in windows console and get first result.
errs - empty

[nilamo]

Popen.communicate() returns two objects, stdout and stderr. You're ignoring stderr right now. Could you print both out, and show us the output?

[snippsat]

Example using new run() and parameter capture_output=True.
I give me correct output,it's also better/safer to use a list then is shell=False(default).

import subprocess

out = subprocess.run(['git', 'log', '--oneline'], capture_output=True)
print(out.stdout.decode())

[Arkantr]

Popen.communicate() returns two objects, stdout and stderr. You're ignoring stderr right now. Could you print both out, and show us the output?

Expected result

---

Example using new run() and parameter capture_output=True.
I give me correct output,it's also better/safer to use a list then is shell=False(default).

import subprocess

out = subprocess.run(['git', 'log', '--oneline'], capture_output=True)
print(out.stdout.decode())

Thx, I tried but get same output

[snippsat]

Try running from command line and not editor.