1. int 类型转换 a = "123" b = int(a) b = b+10 print(type(a),a) print(type(b),b) 2. int(num,base=2), base不写的时候默认为10 a = "0011" b = int(a,base=2) print(b) 答案为 3. 3. -.bit_length() 当前数字为2进制时,至少要用多少位来表示 a = 8 b = a.bit_length() print(b) answer…
Python3内置函数 https://www.runoob.com/python3/python3-built-in-functions.html int https://www.runoob.com/python3/python3-number.html str https://www.runoob.com/python3/python3-string.html list https://www.runoob.com/python3/python3-list.html tuple https…
一.数字int(..)二.字符串replace/find/join/strip/startswith/split/upper/lower/formattempalte = "i am {name}, age : {age}"# v = tempalte.format(name='alex',age=19)v = tempalte.format(**{"name": 'alex','age': 19})print(v)三.列表append.extend.insert索…