我需要找到一种方法以某种顺序合并python中的2个字符串？

Question

String1 = "abcd"
String2 = "uvwxyz"

我希望它合并为：aubvcwdxyz

Answer 1

您可以使用itertools.zip_longest：

from itertools import zip_longest

s1 = "abcd"
s2 = "uvwxyz"
s3 = ''.join(a + b for a, b in zip_longest(s1, s2, fillvalue=''))
print(s3)

<强>输出

aubvcwdxyz

这是一个适用于Python 2的版本。发现差异！

from itertools import izip_longest

s1 = "abcd"
s2 = "uvwxyz"
s3 = ''.join(a + b for a, b in izip_longest(s1, s2, fillvalue=''))
print(s3)

Answer 2

如果你想使用python 2：

a = list("abcd")
b = list("uvwxyz")
q = list(map(None, a, b))
output = ""
for i in q:
    if i[0] is not None:
        output+=i[0]
    if i[1] is not None:
        output+=i[1]

Answer 3

iteration_utilities.roundrobin：

怎么样？

>>> from iteration_utilities import roundrobin

>>> ''.join(roundrobin(String1, String2))
'aubvcwdxyz'

^{1这来自我写的第三方库：iteration_utilities。}