熊猫中的重复列

问题描述

我正在寻找一种方法来复制表的列。这是我的代码

 fbLogin() {
  this.fb.login(['public_profile','email'])
    .then(res => {
      if (res.status === 'connected') {
        this.isLoggedIn = true;
        console.log(res);
        this.authService.handleFacebookCallback().subscribe(
          res => { 
            console.log(res);
            },err => {
                 console.log(err);
            });
        this.getUserDetail(res.authResponse.userID);
      } else {
        this.isLoggedIn = false;
      }
    })
    .catch(e => console.log('Error logging into Facebook',e));
}

我希望输出是这样的

import pandas as pd,numpy as np


env_height = 9
env_width = 9
pixels = 40

action_1 = ['up','down','left','right']
action_2 = action_1.copy
actions = [action_1] + [action_2]
state_space = []

for x in range (0,(env_width * pixels),pixels):
    for y in range (0,(env_height * pixels),pixels):
        state_space += [[x,y]] 

state = [str(s) for s in state_space]
q_table = pd.DataFrame(columns = actions,index=state)


print (q_table)

解决方法

请尝试在"up "中的单词上添加空格（即action_2），因为用这种方式您只是覆盖了action_1中的列。

action_2 = [word + " " for word in action_1]

,

只需使用copy()而不是copy。或者，您可以简单地分配action_2 = action_1。这不会替换原始列表。

然后拉平列表actions

env_height = 9
env_width = 9
pixels = 40

action_1 = ['up','down','left','right']
action_2 = action_1
actions = [action_1] + [action_2]
state_space = []

for x in range (0,(env_width * pixels),pixels):
    for y in range (0,(env_height * pixels),pixels):
        state_space += [[x,y]] 

# flatten the list of lists
actions = [item for sublist in actions for item in sublist]
q_table = pd.DataFrame(columns = actions,index=state)

print(q_table)

      up down left right up down left right
[0,0]  NaN NaN NaN NaN NaN NaN NaN NaN
[0,40] NaN NaN NaN NaN NaN NaN NaN NaN