On 11/23/2016 12:40 PM, Daiyue Weng wrote:
Hi, I am wondering how to concatenate corresponding strings in two lists,
assuming that the lists are of same length, e.g.
val_1 = ['a', 'b', 'c']
val_2 = ['A', 'B', 'C']
# concatenate corresponding strings in 'val_1' and 'val_2'
# and put results in another list 'val' so that
# val = ['aA', 'bB', 'cC']
cheers
Hello,
The easiest is probably first to zip them (i.e. pair the corresponding
pieces together) and then to join them as you normally would with lists
of strings:
>>> print([''.join(pair) for pair in zip(val_1, val_2)])
['aA', 'bB', 'cC']
That uses list comprehensions which might be a bit confusing. In two
steps, you could do the following
>>> pairs = zip(val_1, val_2)
>>> catted_strings = []
>>> for pair in pairs:
catted_string = ''.join(pair)
catted_strings.append(catted_string)
>>> print(catted_strings)
['aA', 'bB', 'cC']
Hope this this helps.
Cheers,
Thomas
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