1.控制台输出格式化的json数据
使用python内置的json处理，可以使JSON串具有一定的可读性，但当遇到大型数据时，它表现成一个很长的、连续的一行时，人的肉眼就很难观看了。为了能让JSON数据表现的更友好，我们可以使用indent参数来输出漂亮的JSON。当在控制台交互式编程或做日志时，这尤其有用：
1 >>> import json 2 >>> data = {"status": "OK", "count": 2, "results": [{"age": 27, "name": "Oz", "lactose_intolerant": ‘true‘}, {"age": 29, "name": "Joe", "lactose_intolerant": ‘false‘}]} 3 >>> print(json.dumps(data)) # No indention 4 {"status": "OK", "count": 2, "results": [{"age": 27, "name": "Oz", "lactose_intolerant": ‘true‘}, {"age": 29, "name": "Joe", "lactose_intolerant": ‘false‘}]} 5 6 >>> print(json.dumps(data, indent=2)) # With indention 7 { 8 "status": "OK", 9 "count": 2, 10 "results": [ 11 { 12 "age": 27, 13 "name": "Oz", 14 "lactose_intolerant": true 15 }, 16 { 17 "age": 29, 18 "name": "Joe", 19 "lactose_intolerant": false 20 } 21 ] 22 }
2.同时迭代两个列表
nfc = ["Packers", "49ers"] afc = ["Ravens", "Patriots"] for teama, teamb in zip(nfc, afc): print(teama + " vs. " + teamb)
3.带索引的列表迭代
teams = ["Packers", "49ers", "Ravens", "Patriots"] for index, team in enumerate(teams): print(index, team)
4.列表转换成字符串
teams = ["Packers", "49ers", "Ravens", "Patriots"] print(",".join(teams))
5.查找元素中的所有组合
from itertools import combinations teams = ["Packers", "49ers", "Ravens", "Patriots"] for game in combinations(teams, 2): print(game) (‘Packers‘, ‘49ers‘) (‘Packers‘, ‘Ravens‘) (‘Packers‘, ‘Patriots‘) (‘49ers‘, ‘Ravens‘) (‘49ers‘, ‘Patriots‘) (‘Ravens‘, ‘Patriots‘)
原文：https://www.cnblogs.com/sanduzxcvbnm/p/10449023.html