获取错误消息：切片列表时列表索引超出范围？

Question

I would like to slice entries from a list index and then insert the sliced entries into a new list f_index . Unfortunately I receive the error message below:

the list index is out of range.

The counting variable i is stopped at 129 . The list index has a total of 973 entries, and i need to slice them all.

Since this is my first question, feel free to give me feedback on how I can ask better questions in the future.

The Code

f_index = []
i = 0

for eachindex in index:
    
    f_index.append((str(index[i]).split('--')[1].split(';')[0]))
    
    i= i +1 
  
print(f_index)

Output error

IndexError                                Traceback (most recent call last)
<ipython-input-154-f0d0c9347c8a> in <module>
      8 for eachindex in index:
      9 
---> 10     f_index.append((str(index[i]).split('--')[1].split(';')[0]))
     11 
     12     i= i +1

IndexError: list index out of range

Answer 1

It seems that your index is not type of iterable object. you can check it by following code:

>>> from collections.abc import Iterable
>>> isinstance(index , Iterable)

and result will be True/False.

strings,arrays,collections,tuples are iterable and number is not iterable, for example:

>>> name = "ali"
>>> isinstance(name, Iterable)
True
>>> number = 12
>>> isinstance(number, Iterable)
False

*Code tested on Python version 3.8.3

for more information about iterable objects see this .

Answer 2

Is this a job for a nice, pythonic list comprehension?

index = [['ACCO;NUM;ACCO -- Acceptances Outstanding;;'],
         ['ACCRT;NUM;ACCRT -- ARO Accretion Expense;;']]

f_index = [rec[0].split(' -- ')[1].split(';')[0] for rec in index]
print(f_index)

['Acceptances Outstanding', 'ARO Accretion Expense']

Answer 3

Assuming that your index list looks like,

[['ACCO;NUM;ACCO -- Acceptances Outstanding;;'], ['ACCRT;NUM;ACCRT -- ARO Accretion Expense;;'],......]

which means, list of lists while the inner lists are folowing the format:

['<letters>;<letters>;<letters> -- <letters> <letters> <letters>;;']

f_index =[]
for inner_list in index:
    temp=inner_list[0].split('--')
    temp=temp[1].split()
    acc,out=temp[0].strip(),temp[1].strip().strip(';;')
    f_index .append([acc,out])

Answer 4

Thanks for all your help. I have removed the problematic entry manually and now it runs.