删除字符串中的开头零和结尾零

list_num = ['000231512-n', '1209123100000-n00000',
             'alphanumeric0000', '000alphanumeric']
print([item.strip('0') for item in list_num])   # Remove leading + trailing '0'
print([item.lstrip('0') for item in list_num])  # Remove leading '0'
print([item.rstrip('0') for item in list_num])  # Remove trailing '0'

Output:

['231512-n', '1209123100000-n', 'alphanumeric', 'alphanumeric']
['231512-n', '1209123100000-n00000', 'alphanumeric0000', 'alphanumeric']
['000231512-n', '1209123100000-n', 'alphanumeric', '000alphanumeric']