s="My name is %s,i am %s years old" %("wdl",28)
print(s)
s2="My name is {0},i am {1} years old"
print(s2.format("aaa", "bbb"))
print(s2)
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s="My name is %s,i am %s years old" %("wdl",28)
print(s)
s2="My name is {0},i am {1} years old"
print(s2.format("aaa", "bbb"))
print(s2)
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