[Solved] How to avoid ‘1’ when incoming is none

by


Can you try the following:

req_keys = ['col1', 'col2', 'col3', 'col4']
all_list = [incoming[i] for i in req_keys]
all_list = [i for i in all_list if i]
print('1'.join(all_list))

Example:

incoming = {}
incoming['col1'] = 'a'
incoming['col2'] = None
incoming['col3'] = 'c'
incoming['col4'] = None

Output:

a1c

Another Example:

incoming = {}
incoming['col1'] = 'a'
incoming['col2'] = None
incoming['col3'] = None
incoming['col4'] = 'd'

Output:

a1d

solved How to avoid ‘1’ when incoming is none