摘要：'''#data=open("yesterday",encoding="utf-8").read()f = open("yesterday",'a',encoding = "utf-8") #f文件句柄(文件名，硬盘位置，内容） #r读模式，w写模式。w以写打开文件，创建文件模式，直接覆盖之前文件。 阅读全文

摘要：name = "a \t allon"print(name.capitalize()) #capitalize 首字母大写print(name.count('l')) #count 统计a的数目print(name.center(50,"-")) #50个字符，不够的用-两边补上 a allon p 阅读全文

摘要：import copy#names = "Zhangyang Liming Paochege "names = ["Zhangyang","Liming","zhangsan",["abc","b"],"Paochege","zhangsan"] #[]存取序列,列表#names.append("L 阅读全文

摘要：sys.py 阅读全文

摘要：guess.pyage_of_oldboy = 56count = 0while True: if count ==3: break guess_age = int(input("guess age:")) if guess_age == age_of_oldboy : print("You are 阅读全文