fix - KeyError: 'profile_banner_url'

refer to twintproject/twint#1329

twint/user.py

@@ -28,6 +28,9 @@ def User(ur):
     _usr.username = ur['data']['user']['legacy']['screen_name']
     _usr.bio = ur['data']['user']['legacy']['description']
     _usr.location = ur['data']['user']['legacy']['location']
+    _usr.url = ""
+    if 'url' in ur['data']['user']['legacy']:
+        _usr.url = ur['data']['user']['legacy']['url']
     _usr.url = ur['data']['user']['legacy']['url']
     # parsing date to user-friendly format
     _dt = ur['data']['user']['legacy']['created_at']
@@ -46,7 +49,9 @@ def User(ur):
     _usr.is_private = ur['data']['user']['legacy']['protected']
     _usr.is_verified = ur['data']['user']['legacy']['verified']
     _usr.avatar = ur['data']['user']['legacy']['profile_image_url_https']
-    _usr.background_image = ur['data']['user']['legacy']['profile_banner_url']
+    _usr.background_image = ""
+    if 'profile_banner_url' in ur['data']['user']['legacy']:
+        _usr.background_image = ur['data']['user']['legacy']['profile_banner_url']
     # TODO : future implementation
     # legacy_extended_profile is also available in some cases which can be used to get DOB of user
     return _usr