将两个列表中的元素连接到 python 中的第三个列表中

Question

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']

Answer 1

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']

Answer 2

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)