python - Word Dictionary Problems

Question

I have a starting file which has values on each line separated by a comma, like so:

hello,welcome
hi, howareyou
hola,comoestas

I want to take those words and put them into a dictionary so they are key/value pairs. Then i am trying to ask for a key and return the corresponding value. I believe i am close so any help would be appreciated. Also i am a beginner so simple code is best.

def CreateDictionary():


     WordDictionary = open('file.csv', 'r')
     for line in WordDictionary:
         mylist = line.split(',')
         return(mylist)


def main():

     cd = CreateDictionary()
     text=input('input text:')
     for x in cd.values():
        if x == text:
            word=cd[x]
            print(word)

main()

Answer 1

def makeDict(infilepath):
  answer = {}
  with open(infilepath) as infile:
    for line in infile:
      key,val = line.strip().split(',')
      answer[key] = val
    return answer

def main(infilepath):
  cd = makeDict(infilepath)
  key = input('input text: ')
  if key in cd:
    print(cd[key])
  else:
    print("'%s' is not a known word" %key)