CPA{(UK]S@O}_JFGS4D}B(1.png

    1. ABE

    2. ```python a = 6 b = 8

    a, b = b, a print(a, b)

    1. 3. <br />
    2. ```python
    3. tel = input()
    4. if tel.isdigit():
    5. print(tel)
    6. else:
    7. print("telephone格式错误")

    1. print("hello", "world", seq = '\n')