Add a character to each item in a list

This would have to be the 'easiest' way

>>> suits = ["h","c", "d", "s"]
>>> aces = ["a" + suit for suit in suits]
>>> aces
['ah', 'ac', 'ad', 'as']

Another alternative, the map function:

aces = map(( lambda x: 'a' + x), suits)

If you want to add something different than always 'a' you can try this too:

foo = ['h','c', 'd', 's']
bar = ['a','b','c','d']
baz = [x+y for x, y in zip(foo, bar)]
>>> ['ha', 'cb', 'dc', 'sd']