Python 嵌套列表理解中的 NameError

Question

objective是将下面的for循环转化为嵌套推导列表

txt=['-100:200','-15:0','0:15','30:45']


all_t=[]
for t in txt:
    all_t.append([int ( idx ) for idx in t.split(":")])

进入

all_t=[int(idx) for idx in t.split(":") for t in txt]

但是编译return报错

NameError: name 't' is not defined

感谢有关此错误的任何帮助

Answer 1

txt=['-100:200','-15:0','0:15','30:45']
all_t=[[int(idx) for idx in t.split(":")] for t in txt]
print(all_t)

NameError in nested list comprehension with Python