如何检查名字和姓氏是否在 Python 的列表中？ 可能吗？

Question

The scenario is like this, I'm checking 2 strings in a list, I have a variable containing a string of first name, and a variable containing a last name. And a list containing only strings of their full names. I tried using "and" so that if the first name and the last name are both true we can say that the full name in the list is indeed true, I want them to compare to the list of it's original full name so that it will give me a Boolean value of True. But I'm having problem because if I change either one, it still gives off a result of True. Is my scenario possible? or if not is there any work-around? Here is the idea of the code this doesn't work I just used this to explain my work, I hope this may help to visualize my question.

      first_name = 'John Eric'
      last_name = 'Delos Santos'
      list = ['Delos Santos, John Eric', 'Delos Santos, John Eric', 'Delos Santos, John Eric', 'Delos Santos, John Eric', 'Delos Santos, John Eric']


      if last_name and first_name in list:
         print(True)

      else:
         print(False)

I would appreciate your kind response, Thank you!

Answer 1

From your example, it looks like a pattern possibility is there in the list ie <lastname>, <firstname> . So you can just search this string in the list

Your condition can become

if f"{last_name}, {first_name}" in list:
  print(True)
else:
  print(False)

If such a pattern isn't consistent, then you can use this to find the result

result = next((True for i in list if first_name in i and last_name in i), False)
print(result)

This will iterate all the names and check for occurrences of first_name and last_name in each individual string. If it succeeds, it will return True , or else it will fallback to False which you can print

Answer 2

I assume that the list is always ordered in the same way, so you can do:

    first_name = 'John Eric'
    last_name = 'Delos Santos'
    YourList = ['Delos Santos, John Eric', 'Delos Santos, John Eric', 'Delos Santos, John Eric', 'Delos Santos, John Eric', 'Delos Santos, John Eric']
    
    full_name = last_name + ", " + first_name
    
    if full_name in YourList:
         print(True)
    else:
         print(False)

If not, please let me know!