在Python列表中的元组中搜索字符串

Question

I have a list in Python,

a=[("title","artiste"),
   ("titl","artste"),
   ("ttle","titl")]

I want to create a second list; the second list should not include the search term.

How to search whether "titl" is in the first string of the tuples (just the first string, not the second string) of the three tuples or not?

Answer 1

Use any() and a generator expression to determine whether the first ( [0] ) element of any of the tuples ( t ) in list a equal 'titl' :

>>> any((t[0] == 'titl' for t in a))
True