python'列出索引错误'

我已经写了一个代码来从文件中读取数据进行插值，但是当我运行该程序时说的是在列表中出现索引错误“pointsx.append（float（words [0]））：从您的评论python'列出索引错误'

with open("points.dat","r") as f: 
    data = f.readlines() 
    pointsx = [] 
    pointsy = [] 
    for line in data: 
      words=(line.split()) 
      pointsx.append(float(words[0])) 
      pointsy.append(float(words[1])) 

x = float(input('Enter the value of X:\n')) 

i=0 
lenx=len(pointsx) 

if x<pointsx[0]:\n 
     print("this Particular value of X is lower than the range of interpolation \n") 
elif x>pointsx[lenx-1]: 
     print("This particular value of x is higher than the range of interpolation\n") 
else: 
     for i in range(lenx-1): 
       if(x<=pointsx[i]): 
         break; 


       y=pointsy[i-1]+((pointsy[i]-pointsy[i-1])/(pointsx[i]-pointsx[i-1]))*(x-pointsx[i-1]) 
       print("The required value of y is ",y,"\n") 


f.close()

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2017-03-05 Pema Chida Sherpa

在那里。任何你的文件包含em的机会pty行？（即使在最后） –

哦，非常感谢你。最后有一个空行。现在已经解决了。 :) –

结论，words=(line.split())填充words与[]因此，pointsx.append(float(words[0]))试图达到的words会抛出异常的第一个元素该行前检查的words大小

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2017-03-05 14:08:27

python'列出索引错误'

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