Pythonic 字符串操作

Question

我怎样才能以更高效的 p​​ython 友好方式执行以下操作？

first_team= re.sub("Northern", "N", first_team)
first_team=re.sub("Western", "W", first_team)
first_team=re.sub("Southern", "S", first_team)
first_team=re.sub("Eastern", "E", first_team)

Answer 1

使用 for 循环:

for direction in ('Northern', 'Western', 'Southern', 'Eastern'):
    first_team = first_team.replace(direction, direction[0])

这里不需要使用re.sub 来处理这种简单的替换:), str.replace非常好。