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  1. username = 'xiaoming'
  2. age = 18
  3. hello = f'我的名字叫 username ,今年 age 岁'
  4. print( hello )
  5. print(username. upper ())
  6. print( len (username))
  7.  
Success #stdin #stdout 0.08s 14196KB
stdin
Standard input is empty
stdout
我的名字叫	username		,今年	age	岁
XIAOMING
8