IndexError：讀取文本文件時列出索引超出范圍

Question

我正在嘗試從Python中的.txt文件導入數據來繪制它們，當我想運行程序時，我收到此錯誤：

IndexError：列表索引超出范圍

這是一個從文件和數據中繪制一些數據的教程，如下所示：

0.,1.5
2.24425,1.5
4.48276,1.5
5.97701,1.5
7.47126,1.5
8.96552,1.5
11.204,1.5
13.4483,1.5
15.6925,1.5
16.4368,1.5
18.681,1.5
19.4253,1.5
20.75,1.48079
22.3958,1.45845
23.6551,1.42766
24.8608,1.36509
26.1056,1.28529
27.4468,1.21306
28.8132,1.16694
30.1137,1.08216
31.5696,984.851E-03
33.0455,903.886E-03
34.4998,834.626E-03
35.976,790.798E-03
37.5447,754.429E-03
38.9391,697.508E-03
40.6381,715.628E-03
42.5023,882.211E-03
44.4548,1.07169
46.4502,1.26281
47.9939,1.4163
49.4727,1.47307
50.9886 ,1.48932
52.4883,1.49803
53.9846,1.50005
55.4793,1.50108
56.9737,1.50113
58.4647,1.50104
59.9569,1.50067
61.4477,1.50024
62.941,1.49998
64.4312,1.49969
65.9247,1.49929
67.4158,1.49911
68.9096,1.49872
70.4016,1.4976
71.8958,1.49571
73.3918,1.49193
74.8895,1.48612
76.3943,1.4734
77.9068,1.45366
79.4224,1.39481
81.033,1.2964
82.7794,1.1667
84.4811,971.91E-03
86.4866,837.442E-03
88.0979,892.783E-03
89.4046,970.171E-03
90.8885,972.861E-03
92.3106,976.503E-03
93.7562,995.16E-03
95.2745,1.03632
96.7847,1.07072
98.2745,1.10487
99.7581,1.17663
101.079,1.24002
102.408,1.30343
103.686,1.36529
104.979,1.41119
106.239,1.45107
107.577,1.45885
109.25,1.47844
115.057,1.5
116.552,1.5
117.296,1.5
119.54,1.5
121.785,1.5
124.023,1.5
125.517,1.5
126.262,1.5
129.256,1.5
130.,1.5

這是我下面的Python代碼，用於導入文件並繪制它：

import matplotlib.pyplot as plt
import csv

x=[]
y=[]

with open('raneen.txt','r') as csvfile:
    plots=csv.reader(csvfile, delimiter=',')
    for row in plots:
        x.append(float(row[0])) 
        y.append(float(row[1]))
plt.plot(x,y,label='Loaded from file!')



plt.xlabel('x')
plt.ylabel('y')
plt.title('Interesting graph\nCheck it out')
plt.legend()

plt.show()

我希望在Python中使用這個數據的圖表

Answer 1

Sicce沒有,在你的數據文件中，你必須在csv.reader方法中指定delimiter參數：

plots=csv.reader(csvfile, delimiter='  ')

Answer 2

在編輯之前，文件是用可變長度的空格分隔的，就像這樣

            0.                 1.5        
            2.24425            1.5        
            4.48276            1.5        
            5.97701            1.5        
            7.47126            1.5        
            8.96552            1.5        
           11.204              1.5        
           13.4483             1.5        
           15.6925             1.5        
           16.4368             1.5        
           18.681              1.5        
           19.4253             1.5        
           20.75               1.48079    
           22.3958             1.45845    
           23.6551             1.42766    
           24.8608             1.36509    
           26.1056             1.28529    
           27.4468             1.21306    
           28.8132             1.16694    
           30.1137             1.08216    
           31.5696           984.851E-03  
           33.0455           903.886E-03  
           34.4998           834.626E-03  
           35.976            790.798E-03  
           37.5447           754.429E-03  
           38.9391           697.508E-03  
           40.6381           715.628E-03  
           42.5023           882.211E-03  
           44.4548             1.07169    
           46.4502             1.26281    
           47.9939             1.4163     
           49.4727             1.47307    
           50.9886             1.48932    

因此，為了獲得兩個向量，您可以這樣繼續：

x = []
y = []

with open(".../data.txt") as file:
    data = file.read()
data = data.split("\n")
for line in data:
    line = line.lstrip()
    x.append(float(line.split(" ")[0]))
    line = line.lstrip(line.split(" ")[0])
    y.append(float(line.strip()))

我知道它不是最優雅的方法，它對缺失值敏感，但對於提供的示例，它可以工作