如何从 function 导出结果？ （更新了更多代码）

Question

Stackoverflow, hello. I didn't found any information about exporting a data (list in my case) from a "function"

The end of my code is:

def namesearch():
    with open ('recipes.txt') as f:
        dishnames = []
        for line in f:
            line = line.strip()
            # print (line)
            line2=line.split()
            if len(line2) <= 3:
                pass
                try:
                    a=(int(line2[0])/1)
                except IndexError:
                    pass
                except ValueError:
                    dishnames.append(line2)
        for i in dishnames:
            if len(i) > 1:
                j=' '.join(i)
            else:
                j = str(i[0])
            dishnames_string.append(j)

namesearch()

def search_ingridientsnames():
    with open('recipes.txt') as f:
        ingridient_names = []
        for line in f:
            line = line.strip()
            # print (line)
            line2 = line.split()
            try:
                i=0
                if len(line2) > 3 or len(line2)<1:
                    ingridient_names.append(line2[0])
            except IndexError:
                ingridient_names.append('_')
        # print(ingridient_names)
    ingridient_names_final=[i.split(',') for i in ','.join(ingridient_names).split(',_,')]
print(ingridient_names_final)
search_ingridientsnames()

print (dishnames_string)
print (ingridient_names_final)

The result is

>> [['Egg', 'Milk', 'Tomato'], ['Duck', 'Water', 'Honey', 'Soy'], ['Potato', 'Garlic', 'Gouda'], ['Beef', 'Sweet', 'Pita', 'Wine', 'Tomato']]
>> ['Omelette', 'Peking Duck', 'Baked potato', 'Fajitos']
[]

Do you see that? The first print(ingridient_names_final) in the end of function - writing the list from function and it's ok. As you see, I have another value from function, print (dishnames_string) , which is also a part of function - the result of the work is the list. However, when I print again the value from function print (search_ingridientsnames) - the result is []. And I even can't write print(list(search_ingridientsnames)) - the result is an error. How could I recieve the same result from function launching?

The result should be:

>> [['Egg', 'Milk', 'Tomato'], ['Duck', 'Water', 'Honey', 'Soy'], ['Potato', 'Garlic', 'Gouda'], ['Beef', 'Sweet', 'Pita', 'Wine', 'Tomato']]
>> ['Omelette', 'Peking Duck', 'Baked potato', 'Fajitos']
>> [['Egg', 'Milk', 'Tomato'], ['Duck', 'Water', 'Honey', 'Soy'], ['Potato', 'Garlic', 'Gouda'], ['Beef', 'Sweet', 'Pita', 'Wine', 'Tomato']]

UPD

Answer 1

The code is printing exactly what you asked for. To print the result of the function you need to use:

print (search_ingridientsnames())

Answer 2

From a first hand look i can say that python is interpreting the result of the print statement as an object and is therefore printing what you see on the console. You need to write it as print(search_ingredientsname()).