1. 大小写转换
Python提供了简单的方法来转换字符串的大小写:
text = "Python Text Processing" # 转换为大写 upper_text = text.upper() print(upper_text) # 输出: PYTHON TEXT PROCESSING # 转换为小写 lower_text = text.lower() print(lower_text) # 输出: python text processing # 首字母大写 title_text = text.title() print(title_text) # 输出: Python Text Processing # 大小写交换 swap_text = text.swapcase() print(swap_text) # 输出: pYTHON tEXT pROCESSING
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