rec/sproc

⛏ Subprocesses for subhumanses ⛏

⛏️sproc: subprocesseses for subhumanses ⛏

Run a command in a subprocess and yield lines of text from stdout and stderr independently.

Useful for handling long-running proceesses that write to both stdout and stderr.

Simple Example

import sproc

CMD = 'my-unix-command "My Cool File.txt" No-file.txt'

for ok, line in sproc.Sub(CMD) as sp:
    if ok:
         print(' ', line)
    else:
         print('!', line)

if sp.returncode:
    print('Error code', sp.returncode)

# Return two lists of text lines and a returncode
out_lines, err_lines, returncode = sproc.run(CMD)

# Call callback functions with lines of text read from stdout and stderr
returncode = sproc.call(CMD, save_results, print_errors)

# Log stdout and stderr, with prefixes
returncode = sproc.log(CMD)

API Documentation

sproc's Issues

Delete old "run_subprocess" on pypi

After all the projects which use it (which are all pre-release) are updated.

Rename to subprocessor

Missing stdout line when process is waiting for input

Minimal example to reproduce (running Terraform as a subprocess):

from subprocessor import Sub

process = Sub("terraform apply")
for is_stdout, line in process:
    print(line, end = "")

Output:

Changes to Outputs:
  + test = "a"

You can apply this plan to save these new output values to the Terraform
state, without changing any real infrastructure.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

However we are missing one more line with input:

Changes to Outputs:
  + test = "a"

You can apply this plan to save these new output values to the Terraform
state, without changing any real infrastructure.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value:

It appears however if I press enter afterwards