qiepian
Topic sourcedef trim(s):
if not len(s)>1:
print("字符过短")
if s[0] == ' ':
s = s[1:]
if s[-1] == ' ':
s =s[:-1]
return s
a=trim(" time ")
print(a)
- 1
def trim(s):
if not len(s)>1:
print("字符过短")
if s[0] == ' ':
s = s[1:]
if s[-1] == ' ':
s =s[:-1]
return s
a=trim(" time ")
print(a)
regnaro
def trim(s):
if not s:
return s
if s[0] == ' ':
s = trim(s[1:])
elif s[-1] == ' ':
s = trim(s[:-1])
return s