Apply function to one element of a list in Python
- by user189637
I'm looking for a concise and functional style way to apply a function to one element of a tuple and return the new tuple, in Python.
For example, for the following input:
inp = ("hello", "my", "friend")
I would like to be able to get the following output:
out = ("hello", "MY", "friend")
I came up with two solutions which I'm not satisfied with.
One uses a higher-order function.
def apply_at(arr, func, i):
return arr[0:i] + [func(arr[i])] + arr[i+1:]
apply_at(inp, lambda x: x.upper(), 1)
One uses list comprehensions (this one assumes the length of the tuple is known).
[(a,b.upper(),c) for a,b,c in [inp]][0]
Is there a better way? Thanks!
