删除空白

Python能够找出字符串开头和末尾多余的空白。要删除空白可用rstrip()（删除末尾空白）、lstrip()（删除开通空白）和strip()（删除两边空白）

favorite_languages = " python "
print("\"" + favorite_languages + "\"")
print("\"" + favorite_languages.rstrip() + "\"")
print("\"" + favorite_languages.lstrip() + "\"")
print("\"" + favorite_languages.strip() + "\"")

字符串大小写切换

title(): 首字母大写
upper(): 全部大写
lower(): 全部小写

name = "Liang chen"
print("小写：" + name.lower())
print("大写：" + name.upper())
print("首字母大写：" + name.title())