Search Function Python using 2D array list

Question

I am trying to do a search function for a 2 dimension array or list. How do I search thru this list and return the values of the items.

myfoodlist = [("Chicken Pasta", 10),("Beef Noodle", 12),("Hot Coffee", 4.20),( "Fish and Chips", 8.50)]

foodsearch = raw_input("Please input food to search: ")

        for item in (myfoodlist) :

            if item.find(foodsearch) != -1:
                searchReturnsItems.append(item)
        for item in searchReturnsItems:
            print(item, "\t:\t")
        searchReturnsItems.clear()

Example

I like to ask for a key word like "beef" and return a list of all beef items and store in array.

Above is my code and I have some challenges.

Anyone can provide me an example to search a 2D array will be helpful

Will each food item pair always contain food name as it's first entry? — Venkata Rathnam
– Venkata Rathnam, Commented Nov 17, 2019 at 11:16

fzn · Accepted Answer · 2019-11-17 11:16:26Z

1

I've slightly modified your searching method to use list comprehension, and use re package to support partial case insensitive searches.

import re

myfoodlist = [("Chicken Pasta", 10),("Beef Noodle", 12),("Hot Coffee", 4.20),( "Fish and Chips", 8.50)]

foodsearch = input("Please input food to search: ")

searchReturnsItems = [item for item in myfoodlist if re.search(foodsearch, item[0], re.IGNORECASE)]

for item in searchReturnsItems:
    print(item, "\t:\t")
searchReturnsItems.clear()

Output

Please input food to search: beef
('Beef Noodle', 12)

answered Nov 17, 2019 at 11:16

fzn

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3 Comments

fzn Over a year ago

You might need to use regex match to allow for partial and case insensitive matches.

Ronald Tan Over a year ago

if my list is now changed to a python dictionary, how will it be different?

Ronald Tan Over a year ago

myfoodlist = { "Beef Noodle" : 12, "Chicken Pasta" : 10, "Hot Coffee" : 4.20, "Fish and Chips" :8.50}

SRG · Accepted Answer · 2019-11-17 11:22:25Z

0

myfoodlist = [("Chicken Pasta", 10),("Beef Noodle", 12),("Hot Coffee", 4.20),( "Fish and Chips", 8.50)]

foodsearch = input("Please input food to search: ")

def searchFood():

        for item in (myfoodlist) :

            if(item[0]==foodsearch):

                return item[0],item[1]
searchFood()

output

Please input food to search: Hot Coffee

Out[2]: ('Hot Coffee', 4.2)

answered Nov 17, 2019 at 11:22

SRG

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