Hi guys I have question about global variable. How can I put filename into varibale and call it on global. My code:
for filename in dirs:
if filename.startswith("EPG_NatGeo"):
z = filename
output_file = open('nat.xml','w')
with open (r'{}','r').format(z) as file:
How can varibale became file for opening? Thx for reading this post!
You don't need to use .format() at all here:
with open(z, 'r') as file:
and even if you did, you'd call it on the string object, not the open file:
with open('foo_{}_bar'.format(z), 'r') as file:
Note that z is re-bound in your loop more than once if multiple filename values match your .startswith() test, you'll only be passing the last match to open(). If no values match you run the risk of z never having been bound at all and you'll get a NameError exception instead.
Use break to pick the first match, and use else: on the for loop to detect that no match was made:
for filename in dirs:
if filename.startswith("EPG_NatGeo"):
z = filename
break
else:
raise ValueError('No filename matched')
