Nsryjdtyk

I'm trying to call a function using a name of a var dinamically, but I don't know if this is possible, something like that:

fight_movies = list() # var how I want to use in function call

win_movies = list() # var how I want to use in function call

knowledge_movies = list() # var how I want to use in function call

biography_movies = list() # var how I want to use in function call



for genre in genres:

    .... Ommited #////// Here is where I call the function

    write_jsonl(genre + '_movies', genre, rating, title, genre) #here is the call of the function





def write_jsonl(movie_list, genre, rating, title, json_name):

    dict = {'title': title, 'genre': genre, 'rating': rating}

    movie_list.append(dict)

    # print(action_movies)

    with jsonlines.open(json_name+'.jsonl', mode='w') as writer:

        writer.write(movie_list)

I'm trying to pass the variable name as a list dynamically, but I'm not sure if that's possible in python, any suggestions?

Error: Traceback (most recent call last):

  File "bucky.py", line 58, in <module>

    web_crawling()

  File "bucky.py", line 34, in web_crawling

    write_jsonl(genre + '_movies', genre, rating, title, genre)

  File "bucky.py", line 52, in write_jsonl

    movie_list.append(dict)

AttributeError: 'str' object has no attribute 'append'

Just use a dictionary:

genres_dict = {k:  for k in ('fight', 'win', 'knowledge', 'biography')}



for genre in genres:

    write_jsonl(genres_dict[genre], genre, rating, title, genre)

A variable number of variable is not the recommended approach.

Related: How do I create a variable number of variables?.

You could find your variables in locals()/globals() like so

for genre in genres:

    #.... Ommited ////// Here is where I call the function

    write_jsonl(locals()[genre + '_movies'], genre, rating, title, genre) #here is the call of the function

As suggested by most use a dictionary, and then if you want and I think what you are intending for it to do is to then store the dictionary in a list. However, your code shows a problem where you passed a string for what I believe you intend to be a list.

def write_jsonl(movie_list, genre, rating, title, json_name):

    d= {'title': title, 'genre': genre, 'rating': rating}

    movie_list.append(d) #<-- movie_list based on your traceback is a str

    # print(action_movies)

    with jsonlines.open(json_name+'.jsonl', mode='w') as writer:

        writer.write(movie_list)

The example below works as intended:

all_movie_list = 



def write_jsonl(movie_list, genre, rating, title, json_name):

    d= {'title': title, 'genre': genre, 'rating': rating}

    movie_list.append(d)

    # print(action_movies)

    with jsonlines.open(json_name+'.jsonl', mode='w') as writer:

        writer.write(movie_list)



write_jsonl(all_movie_list,'Crime','10','Godfather','test')



all_movie_list

[{'title': 'Godfather', 'genre': 'Crime', 'rating': '10'}]

The better way is to store your list of titles by genre in a dictionary, you can use the defaultdict data model from the Python standard library for that.

from collections import defaultdict

movie_list = defaultdict(list)



def write_jsonl(movie_list, genre, rating, title, json_name):

    d= {'title': title, 'genre': genre, 'rating': rating}

    movie_list['{}_movies'.format(genre)].append(d)

    # print(action_movies)

    with jsonlines.open(json_name+'.jsonl', mode='w') as writer:

        writer.write(movie_list)



movie_list

>>defaultdict(list,

            {'Crime_movies': [{'title': 'Godfather',

               'genre': 'Crime',

               'rating': '10'}]})



movie_list['Crime_movies']

>>[{'title': 'Godfather', 'genre': 'Crime', 'rating': '10'}]

Also do not use inbuilt method or reserved names as variables, I replaced your dict variable to just d.