String

---

week

# week.py
weekname = "一二三四五六日"
today = eval((input("输入今天星期几？")）
print("今天星期"+weekname[today-1])

• 改变大小写：.lower() .upper()

• 分割字符串："a2b2c2d2e".split("2") --> ['a','b','c','d','e']

• 计数字符串中指定字符出现的次数："an apple a day".count('a') --> 4

• 替换字符串："python".replace("n","x") --> "pythox"

• 字符居中："python".center(20,"=") --> '=python='

• 去除指定字符："python".strip("=np") --> 'ytho'

• 用符号分割字符串：",".join("abcde") --> 'a,b,c,d,e'

• 返回字符串长度："python".len()

• 变成字符串：str(123) --> '123'

• 整数改为十六进制/八进制字符串：hex(),oct()