如何在元组数组中找到特定的元组？

Question

I got an array of tuples, each tuple contains (string, string), and I want to find specific tuple inside the array.

example:

[("command","ABCDEFG"),("arguments","XYZW"),("time","ERRTY")]

Answer 1

使用in关键字：

('foo', 'bar') in [('foo', 'bar'),('spam', 'eggs')]

Answer 2

You can convert these tuples to dict and search by first element:

list_of_tuples = [("command","ABCDEFG"),("arguments","XYZW"),("time","ERRTY")]

d = dict(list_of_tuples)

print(d['arguments'])

Prints:

XYZW

Edit: to check if some key exists in dictionary, use in operator, eg.:

if 'arguments' in d:
    print(d['arguments'])
else:
    print('Not found!')