通过嵌套表/ spreadhseet迭代

Question

不知道如何去入门。我有许多制表符分隔的文件，我希望能够放入数据库。但困难的是，桌子并没有以最好的方式摆放。例如，父行将会被指定为字母（D），那么在该父母下的行对应于父母，直到下一个D行被列出为止

理想情况下，我希望所有子行在同一行家长。为了把它放入一个数据库和查询结果（除非有另一种方式）

这里是链接到的数据：http://www.gasnom.com/ip/vector/archive.cfm?type=4

更好的数据的可视化表示之前有人提到它，我不能刮HTML数据，因为这是唯一具有相应网站的数据文件。

http://www.vector-pipeline.com/Informational-Postings/Index-of-Customers.aspx

Answer 1

我认为这有效。它只是在“父”行列表中的每个“父”行末尾添加一列“子”行。

customer_file = open('index_of_customers.txt', 'r') # you should of course do more try-except stuff in your script 
database = []          # all data ends up here 
for each_line in customer_file:      # reads one line at a time 
    each_line = each_line.strip('\n')    # removes newlines 
    each_line = each_line.split('\t')    # split the line of text into a list. This should save any empty columns aswell 
    if each_line[0] == 'D':       # if line starts with a single D 
     each_line.append([])      # add a list for the other lines at the end of the D line 
     database.append(each_line)    # add a D line to the "database" as a list 
    else:           # if line don't start with a single D 
     if len(database):       # the first line is not a D line, so we need to check if the database is empty to avoid errors 
      database[-1][-1].append(each_line)  # add the line to the last D line's list. 
for each_D_line in database:      # prints out the database in an ugly way 
    print(str(each_D_line[:-1]))     # first the D lines 
    for each_other_line in each_D_line[-1]: 
     print('\t' + str(each_other_line))  # then each other line