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Print betterhelp to stderr, not stdout.

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voussoir 2020-12-07 20:09:36 -08:00
parent 6873beb823
commit 62b44be0d5
1 changed files with 7 additions and 5 deletions
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12
voussoirkit/betterhelp.py
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@ -1,6 +1,8 @@
import argparse import argparse
import functools import functools
from voussoirkit import pipeable
HELPSTRINGS = {'', 'help', '-h', '--help'} HELPSTRINGS = {'', 'help', '-h', '--help'}
# INTERNALS # INTERNALS
@ -119,7 +121,7 @@ def single_betterhelp(parser, docstring):
if argument == '' and can_bare: if argument == '' and can_bare:
pass pass
elif argument in HELPSTRINGS: elif argument in HELPSTRINGS:
print(docstring) pipeable.stderr(docstring)
return 1 return 1
return main(argv) return main(argv)
@ -141,20 +143,20 @@ def subparser_betterhelp(parser, main_docstring, sub_docstrings):
return main(argv) return main(argv)
if command not in sub_docstrings: if command not in sub_docstrings:
print(main_docstring) pipeable.stderr(main_docstring)
if command == '': if command == '':
because = 'you did not choose a command' because = 'you did not choose a command'
print(f'You are seeing the default help text because {because}.') pipeable.stderr(f'You are seeing the default help text because {because}.')
elif command not in HELPSTRINGS: elif command not in HELPSTRINGS:
because = f'"{command}" was not recognized' because = f'"{command}" was not recognized'
print(f'You are seeing the default help text because {because}.') pipeable.stderr(f'You are seeing the default help text because {because}.')
return 1 return 1
argument = listget(argv, 1, '').lower() argument = listget(argv, 1, '').lower()
if argument == '' and command in can_bares: if argument == '' and command in can_bares:
pass pass
elif argument in HELPSTRINGS: elif argument in HELPSTRINGS:
print(sub_docstrings[command]) pipeable.stderr(sub_docstrings[command])
return 1 return 1
return main(argv) return main(argv)