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Log message if Instaloader is called w/out target

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This commit is contained in:
Alexander Graf 2018-03-22 13:42:08 +01:00
parent 3640e9c056
commit 07b30d6ebd
1 changed files with 15 additions and 1 deletions
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16
instaloader.py
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@ -32,6 +32,12 @@ import urllib3
__version__ = '3.3.2' __version__ = '3.3.2'
# NOTE: duplicated in README.rst and docs/index.rst
USAGE_STRING = """
{0} [--comments] [--geotags] [--stories]
[--login YOUR-USERNAME] [--fast-update]
profile | "#hashtag" | :stories | :feed | :saved
{0} --help""".format(sys.argv[0])
try: try:
# pylint:disable=wrong-import-position # pylint:disable=wrong-import-position
@ -1591,6 +1597,14 @@ class Instaloader:
# Save session if it is useful # Save session if it is useful
if username is not None: if username is not None:
self.save_session_to_file(sessionfile) self.save_session_to_file(sessionfile)
# User might be confused if Instaloader does nothing
if not profilelist:
if self.is_logged_in:
# Instaloader did at least save a session file
self._log("No targets were specified, thus nothing has been downloaded.")
else:
# Instloader did not do anything
self._log("usage:"+USAGE_STRING)
if self.error_log: if self.error_log:
print("\nErrors occured:", file=sys.stderr) print("\nErrors occured:", file=sys.stderr)
for err in self.error_log: for err in self.error_log:
@ -1598,7 +1612,7 @@ class Instaloader:
def main(): def main():
parser = ArgumentParser(description=__doc__, add_help=False, parser = ArgumentParser(description=__doc__, add_help=False, usage=USAGE_STRING,
epilog="Report issues at https://github.com/instaloader/instaloader/issues. " epilog="Report issues at https://github.com/instaloader/instaloader/issues. "
"The complete documentation can be found at " "The complete documentation can be found at "
"https://instaloader.github.io/.") "https://instaloader.github.io/.")