search an item in an list and print out the list which contains that item-CodePudding

I'm currently writing a test code for a project which takes the ingredients in your fridge and runs it over the recipes, and prints out the recipes that have your ingredients.

But I'm a bit frustrated because no matter how hard I try, the result wouldn't match. Here's a test run.

ingre = 'đùi gà, hành lá'

content = 'dvjkshdvjkdsnvjksuihv đùi gà, djghajhdjfkasjkd Hành lá'

ingres= ingre.split(',')

content_list = content.split(',')

print(ingres)

print(content)

index  = content_list.index('đùi  gà')
print('Vị  trí  của  công  thức  chứa  đùi  gà  là', index)

Even though it should print out the 'dvjkshdvjkdsnvjksuihv đùi gà', but instead the program displays

ValueError: 'đùi gà' is not in list

Can someone help me understand why is it not working?

CodePudding user response：

You are Finding an index of 'đùi gà' as an element in your content_list. but content_list contains ['dvjkshdvjkdsnvjksuihv đùi gà', ' djghajhdjfkasjkd Hành lá'] that's why it displays ValueError: 'đùi gà' is not in the list.

CodePudding user response：

Example among many others if you want to get the index of the ingredient if he's on the list of recipees:

ingredient = "dui ga, hanh la"

ingres= ingredient.split(',')

content = 'dvjkshdvjkdsnvjksuihv dui ga,djghajhdjfkasjkd hanh la'

content_list = content.split(',')

print(ingres)
print(content_list)

searching = "dui ga"

for item in content_list:
    if searching in item:
        print("index -> ", content_list.index(item))

CodePudding user response：

def find_index_of_string_from_list_of_strings(search_string, content_list):
    i = 0
    for string in content_list:
        if string.index(search_string) >= 0:
            return i
        i  = 1
        return -1


                
ingre = 'đùi gà, hành lá'

content = 'dvjkshdvjkdsnvjksuihv đùi gà, djghajhdjfkasjkd Hành lá'

ingres= ingre.split(',')

content_list = content.split(',')

print(ingres)

print(content)

index = find_index_of_string_from_list_of_strings('đùi gà', content_list)

print('Vị trí của công thức chứa đùi gà là', index)

As you are trying to get the substring searched within content_list which is a list of strings, creating a function like this should work...