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- my_string = "Hello, World!"
- out_of_range = False
- # 测试索引超出字符串长度的情况
- try:
- my_string[len(my_string)] == ""
- except:
- print("1.IndexError: 索引超出字符串长度")
- out_of_range = True
- assert out_of_range
- # 测试切片超出字符串长度的情况
- b = my_string[0:100]
- print(b)
- # 测试使用负数索引访问字符串的情况
- assert my_string[-1] == "!"
- assert my_string[-5:-1] == "orld"
- print("PASS")
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