How do you read from stdin?

Question

I\'m trying to do some of the code golf challenges, but they all require the input to be taken from stdin. How do I get that in Python?

Answer 1

When using -c command, as a tricky way, instead of reading the stdin (and more flexible in some cases) you can pass a shell script command as well to your python command by putting the shell command in quotes within a parenthesis started by $ sign.

e.g.

python3 -c "import sys; print(len(sys.argv[1].split('\n')))" "$(cat ~/.goldendict/history)"

This will count the number of lines from goldendict's history file.