def deduce_helpful_msg(req):
"""Returns helpful msg in case requirements file does not exist,
or cannot be parsed.
:params req: Requirements file path
"""
msg = ""
if os.path.exists(req):
msg = " It does exist."
# Try to parse and check if it is a requirements file.
try:
with open(req, 'r') as fp:
# parse first line only
next(parse_requirements(fp.read()))
msg += " The argument you provided " + \
"(%s) appears to be a" % (req) + \
" requirements file. If that is the" + \
" case, use the '-r' flag to install" + \
" the packages specified within it."
except RequirementParseError:
logger.debug("Cannot parse '%s' as requirements \
file" % (req),
exc_info=1)
else:
msg += " File '%s' does not exist." % (req)
return msg
def deduce_helpful_msg(req: str) -> str:
"""Returns helpful msg in case requirements file does not exist,
or cannot be parsed.
:params req: Requirements file path
"""
msg = ""
if os.path.exists(req):
msg = " The path does exist. "
# Try to parse and check if it is a requirements file.
try:
with open(req) as fp:
# parse first line only
next(parse_requirements(fp.read()))
msg += ("The argument you provided "
"({}) appears to be a"
" requirements file. If that is the"
" case, use the '-r' flag to install"
" the packages specified within it.").format(req)
except RequirementParseError:
logger.debug("Cannot parse '%s' as requirements file",
req,
exc_info=True)
else:
msg += f" File '{req}' does not exist."
return msg