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  1. username="xiaoming"
  2. age=18
  3. aa=f"我的名字叫{username},今年{age}岁."
  4. print(aa)
  5. print (username.upper())
  6. print (len(username))
Success #stdin #stdout 0.09s 14160KB
stdin
Standard input is empty
stdout
我的名字叫xiaoming,今年18岁.
XIAOMING
8