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POBeginner-level virtual library program troubles, how do I let the user create an array or 'def'?
 

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  1. POBeginner-level virtual library program troubles, how do I let the user create an array or 'def'?
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    <p>Alright, so I'm bad with words so I painted you all a beautiful picture hoping that whole picture is worth a thousand words thing is true:</p> <p><img src="https://i.stack.imgur.com/stmhM.png" alt="enter image description here"></p> <p>However, if the picture didn't do the job I'll try to describe my issue. I'm trying to make a sort of beginner level virtual library in Python. However, first here is my code thus-far:</p> <pre><code>book_title = [] book_page_count = [] book_publish_date = [] book_author = [] def elsePhrase(): print("Wrong input, I'll just send you back to the menu.\n") menu() def menu(): print("- - - - - - - -- PROGRAM MENU -- - - - - - - -") print("Welcome Book Sorter, what would you like to do? \n") print("1 ) Add a book") print("2 ) List a specific book's details") print("3 ) List all recorded complete book details") menu_Choice = input("4 ) Exit.\n\n") if menu_Choice == 1: add_book() elif menu_Choice == 2: list_book() elif menu_Choice == 3: list_all() elif menu_Choice == 4: exit() else: print("Error: Please enter a number as shown and try again.") print("-----------------------------------------------------------\n\n") menu() def add_book(): print("\nYou selected: Add book. Please fill out the following information: \n") title = raw_input("Book title: ") book_title.append(str(title)) page_count = raw_input("Book page count: ") book_page_count.append(page_count) publish_date = raw_input("Book publish date: ") book_publish_date.append(publish_date) author = raw_input("Book author: ") book_author.append(author) print("\nProcess complete.") Restart() def list_book(): # Find out how to fix this print("You selected: list book. Please select a book from below: ") print(book_title) choice = raw_input("\n") def list_all(): #Find out how to make this actually look not-shitty and make sense. print(book_title) print(book_page_count) print(book_publish_date) print(book_author) def Restart(): toMenu = raw_input("\n\tWould you like to go back to the main menu? Y / N\t\n\n") if toMenu == "Y": menu() elif toMenu == "N": toExit = raw_input("Oh.. Okay then want me to just exit the program? Y /N\n\n") if toExit == "Y": exit() elif toExit == "N": print("Alright, I guess I'll just leave you be, you know where the big red X button is I guess. Take your time.") else: elsePhrase() else: elsePhrase() def main(): menu() main() </code></pre> <p>Yeah, it's bad I know, I'm sorry; I am still trying to learn.</p> <p>Anyway, where I am having trouble is I want to basically create a unique array or 'def' that has all this information in it.. So say for example I want to add a book into this library it will make a block of information that holds the title, author, page count, publish date, etc.. All together in a comfortable little box of information I can call later. The issue is I have no idea how to actually do this with an undetermined amount of information defined by the user.</p> <p>So.. That about sums it up I guess, thanks very much in advance for any help!</p> <p><strong>TL;DR: I don't understand how to let the user enter a block of seperate information (Title, author, page count, etc..), bind it all together, and then print it out again on demand easily(Saying "Find details on X and Y" where X is book 1 / all the information entered in step 1 and Y is all the information on book 2 in a different step 1. All done multiple-infinite times.</strong></p> <p>I hope this made sense, please free to ask me anything, I just would really like to be able to do this, thanks!</p>
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    1. USArnoldM904
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    1. COThere's a Python data structure missing from your program: I think you might be interested in [dictionaries](http://docs.python.org/2/tutorial/datastructures.html#dictionaries). (`namedtuple`s would work too, but might as well start with `dict`s.)
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    2. COSo how would I go about letting a user create a dictionary though?
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      1. USArnoldM904
 

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