码迷,mamicode.com
首页 > 编程语言 > 详细

pandas练习(二)------ 数据过滤与排序

时间:2018-06-13 14:53:14      阅读:563      评论:0      收藏:0      [点我收藏+]

标签:lin   object   ...   art   命中   1.9   ade   man   span   

数据过滤与排序------探索2012欧洲杯数据

相关数据见(github

步骤1 - 导入pandas库

import pandas as pd

步骤2 - 数据集

path2 = "./data/Euro2012.csv"      # Euro2012.csv

步骤3 - 将数据集命名为euro12

euro12 = pd.read_csv(path2)
euro12.tail()

输出:

 TeamGoalsShots on targetShots off targetShooting Accuracy% Goals-to-shotsTotal shots (inc. Blocked)Hit WoodworkPenalty goalsPenalties not scored...Saves madeSaves-to-shots ratioFouls WonFouls ConcededOffsidesYellow CardsRed CardsSubs onSubs offPlayers Used
11 Republic of Ireland 1 7 12 36.8% 5.2% 28 0 0 0 ... 17 65.4% 43 51 11 6 1 10 10 17
12 Russia 5 9 31 22.5% 12.5% 59 2 0 0 ... 10 77.0% 34 43 4 6 0 7 7 16
13 Spain 12 42 33 55.9% 16.0% 100 0 1 0 ... 15 93.8% 102 83 19 11 0 17 17 18
14 Sweden 5 17 19 47.2% 13.8% 39 3 0 0 ... 8 61.6% 35 51 7 7 0 9 9 18
15 Ukraine 2 7 26 21.2% 6.0% 38 0 0 0 ... 13 76.5% 48 31 4 5 0 9 9 18

 

5 rows × 35 columns

步骤4 选取 Goals 这一列

euro12.Goals  # euro12[‘Goals‘] 

输出:

技术分享图片

步骤5 有多少球队参与了2012欧洲杯?

euro12.shape[0]

输出:

16

步骤6 该数据集中一共有多少列(columns)?

euro12.info()

输出:

<class ‘pandas.core.frame.DataFrame‘>
RangeIndex: 16 entries, 0 to 15
Data columns (total 35 columns):
Team                          16 non-null object
Goals                         16 non-null int64
Shots on target               16 non-null int64
Shots off target              16 non-null int64
Shooting Accuracy             16 non-null object
% Goals-to-shots              16 non-null object
Total shots (inc. Blocked)    16 non-null int64
Hit Woodwork                  16 non-null int64
Penalty goals                 16 non-null int64
Penalties not scored          16 non-null int64
Headed goals                  16 non-null int64
Passes                        16 non-null int64
Passes completed              16 non-null int64
Passing Accuracy              16 non-null object
Touches                       16 non-null int64
Crosses                       16 non-null int64
Dribbles                      16 non-null int64
Corners Taken                 16 non-null int64
Tackles                       16 non-null int64
Clearances                    16 non-null int64
Interceptions                 16 non-null int64
Clearances off line           15 non-null float64
Clean Sheets                  16 non-null int64
Blocks                        16 non-null int64
Goals conceded                16 non-null int64
Saves made                    16 non-null int64
Saves-to-shots ratio          16 non-null object
Fouls Won                     16 non-null int64
Fouls Conceded                16 non-null int64
Offsides                      16 non-null int64
Yellow Cards                  16 non-null int64
Red Cards                     16 non-null int64
Subs on                       16 non-null int64
Subs off                      16 non-null int64
Players Used                  16 non-null int64
dtypes: float64(1), int64(29), object(5)
memory usage: 4.5+ KB

步骤7 将数据集中的列Team, Yellow Cards和Red Cards单独存为一个名叫discipline的数据框

discipline = euro12[[Team, Yellow Cards, Red Cards]]
discipline

输出:

 技术分享图片

步骤8 对数据框discipline按照先Red Cards再Yellow Cards进行排序

discipline.sort_values([Red Cards, Yellow Cards], ascending = False)

 输出:

 技术分享图片

步骤9 计算每个球队拿到的黄牌数的平均值

round(discipline[Yellow Cards].mean())

输出:

7.0

步骤10 找到进球数Goals超过6的球队数据

euro12[euro12.Goals > 6]

输出:

 

 

TeamGoalsShots on targetShots off targetShooting Accuracy% Goals-to-shotsTotal shots (inc. Blocked)Hit WoodworkPenalty goalsPenalties not scored...Saves madeSaves-to-shots ratioFouls WonFouls ConcededOffsidesYellow CardsRed CardsSubs onSubs offPlayers Used
5 Germany 10 32 32 47.8% 15.6% 80 2 1 0 ... 10 62.6% 63 49 12 4 0 15 15 17
13 Spain 12 42 33 55.9% 16.0% 100 0 1 0 ... 15 93.8% 102 83 19 11 0 17 17 18

2 rows × 35 columns

步骤11 选取以字母G开头或以e结尾的球队数据

# euro12[euro12.Team.str.startswith(‘G‘)]
euro12[euro12.Team.str.endswith(e)]  # 以字母e结束的球队

输出:

 TeamGoalsShots on targetShots off targetShooting Accuracy% Goals-to-shotsTotal shots (inc. Blocked)Hit WoodworkPenalty goalsPenalties not scored...Saves madeSaves-to-shots ratioFouls WonFouls ConcededOffsidesYellow CardsRed CardsSubs onSubs offPlayers Used
4 France 3 22 24 37.9% 6.5% 65 1 0 0 ... 6 54.6% 36 51 5 6 0 11 11 19
6 Greece 5 8 18 30.7% 19.2% 32 1 1 1 ... 13 65.1% 67 48 12 9 1 12 12 20
15 Ukraine 2 7 26 21.2% 6.0% 38 0 0 0 ... 13 76.5% 48 31 4 5 0 9 9 18

3 rows × 35 columns

步骤12 选取前7列

euro12.iloc[: , 0:7]

输出:

技术分享图片

步骤13 选取除了最后3列之外的全部列

euro12.iloc[: , :-3]

输出:

 TeamGoalsShots on targetShots off targetShooting Accuracy% Goals-to-shotsTotal shots (inc. Blocked)Hit WoodworkPenalty goalsPenalties not scored...Clean SheetsBlocksGoals concededSaves madeSaves-to-shots ratioFouls WonFouls ConcededOffsidesYellow CardsRed Cards
0 Croatia 4 13 12 51.9% 16.0% 32 0 0 0 ... 0 10 3 13 81.3% 41 62 2 9 0
1 Czech Republic 4 13 18 41.9% 12.9% 39 0 0 0 ... 1 10 6 9 60.1% 53 73 8 7 0
2 Denmark 4 10 10 50.0% 20.0% 27 1 0 0 ... 1 10 5 10 66.7% 25 38 8 4 0
3 England 5 11 18 50.0% 17.2% 40 0 0 0 ... 2 29 3 22 88.1% 43 45 6 5 0
4 France 3 22 24 37.9% 6.5% 65 1 0 0 ... 1 7 5 6 54.6% 36 51 5 6 0
5 Germany 10 32 32 47.8% 15.6% 80 2 1 0 ... 1 11 6 10 62.6% 63 49 12 4 0
6 Greece 5 8 18 30.7% 19.2% 32 1 1 1 ... 1 23 7 13 65.1% 67 48 12 9 1
7 Italy 6 34 45 43.0% 7.5% 110 2 0 0 ... 2 18 7 20 74.1% 101 89 16 16 0
8 Netherlands 2 12 36 25.0% 4.1% 60 2 0 0 ... 0 9 5 12 70.6% 35 30 3 5 0
9 Poland 2 15 23 39.4% 5.2% 48 0 0 0 ... 0 8 3 6 66.7% 48 56 3 7 1
10 Portugal 6 22 42 34.3% 9.3% 82 6 0 0 ... 2 11 4 10 71.5% 73 90 10 12 0
11 Republic of Ireland 1 7 12 36.8% 5.2% 28 0 0 0 ... 0 23 9 17 65.4% 43 51 11 6 1
12 Russia 5 9 31 22.5% 12.5% 59 2 0 0 ... 0 8 3 10 77.0% 34 43 4 6 0
13 Spain 12 42 33 55.9% 16.0% 100 0 1 0 ... 5 8 1 15 93.8% 102 83 19 11 0
14 Sweden 5 17 19 47.2% 13.8% 39 3 0 0 ... 1 12 5 8 61.6% 35 51 7 7 0
15 Ukraine 2 7 26 21.2% 6.0% 38 0 0 0 ... 0 4 4 13 76.5% 48 31 4 5 0

16 rows × 32 columns

步骤14 找到英格兰(England)、意大利(Italy)和俄罗斯(Russia)的命中率(Shooting Accuracy)

euro12.loc[euro12.Team.isin([England, Italy, Russia]), [Team,Shooting Accuracy]]

输出:

技术分享图片

 

pandas练习(二)------ 数据过滤与排序

标签:lin   object   ...   art   命中   1.9   ade   man   span   

原文地址:https://www.cnblogs.com/xiaxuexiaoab/p/9176699.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!