第一種:
>>> s='nihao,shijie'
>>> t='nihao'
>>> result = t in s
>>> print result
#True
第二種:
import string
deffind_string(s,t):?
?try:
? ? ? ? string.index(s,t)
? ? ? ? return True? ??
except(ValueError):
? ? ? ? return False
s='nihao,shijie'
t='nihao'
result = find_string(s,t)
print result??
#True
