python之如何检查字符串是否为空或长度为零

我最近问了一个关于将值列表从 txt 文件转换为字典列表的问题。你可以从这里的链接看到它:See my question here

P883, Michael Smith, 1991
 
L672, Jane Collins, 1992

(added)
(empty line here)
 
L322, Randy Green, 1992
 
H732, Justin Wood, 1995(/added)
 
^key    ^name        ^year of birth 

===============
this question has been answered and i used the following code (accepted answer) which works perfectly:

 
def load(filename): 
         students = {}
 
 
   infile = open(filename) 
   for line in infile: 
       line = line.strip() 
       parts = [p.strip() for p in line.split(",")] 
       students[parts[0]] = (parts[1], parts[2]) 
   return students  
 
 

然而，当 txt 文件中的值中有一个行空间时。(请参阅添加的部分)它不再工作并给出一个错误，指出列表索引超出范围。

请您参考如下方法:

检查 for 循环中的空行并跳过它们:

for line in infile: 
    line = line.strip() 
    if not line: 
        continue 
    parts = [p.strip() for p in line.split(",")] 
    students[parts[0]] = (parts[1], parts[2])