def is_local_file_valid(local_path):
from os.path import isfile
if not isfile(local_path):
return False
# has an opener been passed, if not assumes file is valid
if local_path.endswith('.nc'):
from netCDF4 import Dataset as opener
error = OSError
elif local_path.endswith('.zip'):
from zipfile import ZipFile as opener, BadZipFile as error
else:
error = BaseException
def opener(p):
return None # dummy opener
# tries to open the path, if it fails, not valid, if it passes, valid
try:
with opener(local_path):
return True
except error:
return False
def is_file_valid(local_path):
"""
Helper function that checks if a file can be opened.
If valid, returns True, else False.
Currently supports netCDF or Zip files.
"""
from os.path import isfile
if not isfile(local_path):
return False
# has an opener been passed, if not assumes file is valid
if local_path.endswith('.nc'):
from netCDF4 import Dataset as opener
error = OSError
elif local_path.endswith('.zip'):
from zipfile import ZipFile as opener, BadZipFile as error
else:
error = BaseException
def opener(p):
return None # dummy opener
# tries to open the path, if it fails, not valid, if it passes, valid
try:
with opener(local_path):
return True
except error:
return False