[英]How to reverse a sublist in python
給定以下列表:
a = ['aux iyr','bac oxr','lmn xpn']
c = []
for i in a:
x = i.split(" ")
b= x[1][::-1] --- Got stuck after this line
誰能幫我如何將它加入實際列表並帶來預期的 output
output = ['aux ryi','bac rxo','lmn npx']
我相信你需要兩行代碼,首先拆分值:
b = [x.split() for x in a]
哪個返回:
[['aux', 'iyr'], ['bac', 'oxr'], ['lmn', 'xpn']]
然后恢復訂單:
output = [x[0] +' '+ x[1][::-1] for x in b]
哪個返回:
['aux ryi', 'bac rxo', 'lmn npx']
您可以使用以下簡單的理解:
[" ".join((x, y[::-1])) for x, y in map(str.split, a)]
# ['aux ryi', 'bac rxo', 'lmn npx']
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