如何编辑列表withPython中的字符串

my_list = ['apple', 'banana', 'cherry']
my_list[1] = 'orange'  # 将列表中索引为1的字符串修改为'orange'
print(my_list)  # 输出：['apple', 'orange', 'cherry']

my_list = ['Hello, World!', 'Python is great!', 'I love programming']
new_list = []

for string in my_list:
    new_string = string.replace('!', '')  # 替换感叹号为空字符串
    new_list.append(new_string)

print(new_list)
# 输出：['Hello, World', 'Python is great', 'I love programming']

my_list = ['apple', 'banana', 'cherry']
new_list = []

for string in my_list:
    if 'a' in string:
        new_string = string.upper()  # 将包含字母'a'的字符串转换为大写
    else:
        new_string = string.lower()  # 其他字符串转换为小写
    new_list.append(new_string)

print(new_list)
# 输出：['APPLE', 'banana', 'cherry']