Python pipes
This projects allow to read stdin and detect if input data comes from a UNIX pipe and if the output is connected to a UNIX pipe.
Install
> pip install python-pipesHow to use
Basic example of a tool that read from info stdin:
# file: basic_example.py
from python_pipes import read_stdin_lines
def main():
for is_stdin_pipe, is_stdout_pipe, line in read_stdin_lines():
print("Input connected to pipe: ", is_stdin_pipe)
print("Output connected to pipe: ", is_stdout_pipe)
print("Line read: ", line)
if __name__ == '__main__':
main()Results depending of how to execute them:
$ python basic_example.py
Input connected to pipe: False
Output connected to pipe: False
Line read: None
$
$ echo "hello" | python basic_example.py
Input connected to pipe: True
Output connected to pipe: False
Line read: hello
$
$ echo "hello" | python basic_example.py | awk '{print $0}'
Input connected to pipe: True
Output connected to pipe: True
Line read: hello
