How do you look for a line in a text file, from a sentence a user has inputted, by using its keywords?

Question

a=input("Please enter your problem?")
problem= ()

with open('solutions.txt', 'r') as searchfile:
    for line in searchfile:
        if problem in line:
            print (line)

Can someone please help me on how to get the keywords from the inputed string by the user. Thanks. I need help on how to look for some of the words the users inputed in to =a and search for them on the textfile and print the line

Answer 1

I assume your keywords is meant to be a list?

Then you use any() to check if any word out of the keywords is in the line.

a=input("Please enter your problem?")
problem= ['#keywords', 'not', 'sure', 'how']

with open('solutions.txt', 'r') as searchfile:
    for line in searchfile:
        if any(word in line for word in problem):
            print (line)

Though, you may want to split() your line to improve that detection.

Otherwise, you have a , which stores the user's input, so you can use that.

a=input("Please enter your problem?")
problem= a.split()

Then, again problem is a list, so you use any() as before

Or, if you want to check if the entire entered value is in a line, then

if a in line:
    print(line)

Answer 2

I am not sure I understood the question but is this what you want?. this will take the line containing the most words from the user input:

problem = a.split(' ')
max_num, current_num = 0,0  #max_num count the maximum apparition of words from the input in the line| current_num count the current number of apparition of words of the user input in the line
chosen_line = ''

with open('solutions.txt', 'r') as searchfile:
    for line in searchfile:
        for word in problem:
            if word in line:
                current_num+=1
        if current_num>max_num:
            print line,max_num,current_num
            max_num=current_num
            chosen_line = line
        current_num = 0
    print chosen_line

but it seems to me the easiest way to do what you want is to store at the start of each answer the question, or even easier - just ask the user the question number and return this corresponding answer.