CODEWITHSUNDEEP
pythonstringlistconcatenation
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Reputation: 141

Concatenate elements from two lists into a third one in python

a = ['1', '2', '3']
b = ['a', 'b', 'c']
c = []

What can I do to get the third list to be the concatenation of the corresponding elements from lists a and b, as in:

c = ['1a', '2b', '3c']

Upvotes: 0

Views: 159

Answers (2)

Kevin Yu
Kevin Yu

Reputation: 26

You can use a enumerate function to elegantly solve your problem.

a = ['1', '2', '3']
b = ['a', 'b', 'c']
c = []
for idx, elem in enumerate(a):
  c.append(a[idx] + b[idx])
print(c)

Upvotes: 1

Gavin Wong
Gavin Wong

Reputation: 1260

Here is a simple while loop to do the trick:

a = ['1', '2', '3']
b = ['a', 'b', 'c']
c = []

counter = 0
while counter < len(a):
    c.append(a[counter] + b[counter])
    counter += 1

print(c)

Obviously, there are more elegant methods to do this, such as using the zip method:

a = ['1', '2', '3']
b = ['a', 'b', 'c']
c = [x + y for x,y in zip(a, b)]

print(c)

Both methods have the same output:

['1a', '2b', '3c']

Upvotes: 1

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