def trim(s):
a = 0
b = 0
for i in s:
if i != ' ':
break
else:
a = a + 1
for i in s[-1::-1]:
b = b + 1
s = s[a:len(s)-b]
return s
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Eok
def trim(s):
a = 0
b = 0
for i in s:
if i != ' ':
break
else:
a = a + 1
for i in s[-1::-1]:
if i != ' ':
break
else:
b = b + 1
s = s[a:len(s)-b]
return s