comprehension syntax 有倆種list, dict

conditional expression:

if 在for后面, if修飾整個語句

never_login_users = [user for user in new_shared_user_ids if is_user_never_login(user)]

ternary operator:

if 在 for前面, 只修飾 最前面的user

never_login_users = [user if is_user_never_login(user) else '' for user? in new_shared_user_ids]
?