def trim(d):
dlen =len(d)
if len==0:
print('please input string again!')
else:
if d[0]==" ":
d=d[1:(dlen+1)]
dlen=dlen-1
if d[dlen-1]==" ":
d=d[0:dlen]
return d
if d[dlen+1]==" ":
# print(d)
#print(d+'no')
#s=input('please input string')
print(trim(' abdcefg '))
-------------------------------其他同学的----------------
def trim(s):
if s[:1]!=' 'and s[-1:]!= ' ':
return s
elif s[:1] == ' ':
return trim(s[1:])
return trim(s[:-1])
print(trim(' ewqeqwe ewqeqe '))
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艾米与艾米
def trim(d):
dlen =len(d)
if len==0:
print('please input string again!')
else:
if d[0]==" ":
d=d[1:(dlen+1)]
dlen=dlen-1
if d[dlen-1]==" ":
d=d[0:dlen]
else:
return d
else:
if d[dlen+1]==" ":
d=d[0:dlen]
else:
return d
# print(d)
#print(d+'no')
return d
#s=input('please input string')
print(trim(' abdcefg '))
-------------------------------其他同学的----------------
def trim(s):
if s[:1]!=' 'and s[-1:]!= ' ':
return s
elif s[:1] == ' ':
return trim(s[1:])
else:
return trim(s[:-1])
print(trim(' ewqeqwe ewqeqe '))