python之检查下一行然后实现该行应该去哪里

我无法弄清楚如何实现一个文本文件，该文件的行中既有文字行，又有数字行。我想尝试做的是读取单词下面的行，然后将这些单词保存到列表变量中。

编码新手，请多多包涵。

示例文本文件:

 Hello World 
 4, 3, 2 
 3, 4, 2 
 2, 3, 4 
 Change the World 
 5, 3, 9 
 3, 9, 5 
 Save the World 
 1, 2, 3 

我的伪代码:

 Open File 
 Read the First Line 
 If the current-line[0] is Letter then: 
   parse the current Line 
   save the parsed to a Word list 
   Go to the next line 
 If the current-line[0] is a Number then: 
   parse the current Line 
   save the parsed line in a list 
   read the next line 
   If the next line has another number then: 
      parse line 
      save it to the previous parsed-line list 
      #Keep Checking if the next line begins with a number 
      #if it doesn't and the next line begins with a letter go back up to the previous statement 

我的问题: 我如何告诉 python 检查下一行而不离开当前行，然后检查下一行应该转到哪个“if”语句？

示例代码:简化

 def parse(): 
    return parse 
 
 txtopen = open("txt","r") 
 line = txtopen.readline() 
 while line: 
  if line[0] is not between 0 or 9:: 
   parse = parse(line) 
   wordlist.append(parse) 
  if line[0] in between  0 and 9: 
   parse = parse(line) 
   list = list.extend(parse) 
   ''' 
   This is where i cant figure out how to read the next line and check 
   ''' 
   finallist = list.append(list) 
  line = txtopen.readline() 

输出:

   wordList : ["Hello Word", "Change the World", "Save the World"] 
   numberList : [[4,3,2,3,4,2,2,3,4],[5,3,9,3,9,5],[1,2,3]] 

在我的逻辑中对我的伪代码的任何帮助都将非常棒，或者任何可以提供帮助的一般性帮助将不胜感激。

请您参考如下方法:

要阅读下一行，您可以这样做。

with open("file.txt", 'r') as f: 
    lines = f.readlines() 
    current_line_index = 0 
    next_line = lines[current_line_index + 1] 
    print next_line 

下面是我将如何解决这个特定问题。

import csv 
 
word_list = [] 
number_list = [] 
 
with open("file.txt", 'r') as f: 
    reader = csv.reader(f) 
    for line in reader: 
        if line[0].strip().isdigit(): 
            number_list.append(line) 
        else: 
            word_list.append(line) 
 
print number_list 
print word_list