Check.py

def checky(inp):                        #Check for different variations of "Yes"
    inp = inp.lower()                   #Turn input into lowercase
    YES = ["yes","y","yup","yeah","sure","correct"] #list of different variations of yes
    x = 0
    while x < len(YES):                 #Loop through the whole of the list
        if inp == (YES[x]):
            return True                 #return true if the input is a variation of "yes"
        x +=1
    else:
        return False                    #return false if the input is not in the list

def checkn(inp):                        #Check for different variations of "No"
    inp = inp.lower()
    NO = ["no","n","nah","nope","no way"]
    x = 0
    while x < len(NO):
        if inp == (NO[x]):
            return True
        x +=1
    else:
        return False

def checkbye(inp):                        #Check for different variations of "Bye"
    inp = inp.lower()
    Bye = ["bye","cya","see you","later"]
    x = 0
    while x < len(Bye):
        if inp == (Bye[x]):
            return True
        x +=1
    else:
        return False



def checkw(inp):                        #Check for different variations of "Weather"
    ExList = ["sunday","rainman"]
    Weather = ["weather","sun","cloud","rain","hail","snow","fog","thunder","lightning",]
    x = 0
    insentence = inp.split()            #Split sentence into words
    while x < len(Weather):             #Loop through list of "weather" variations
        z = 0
        while z < len(insentence):      #Loop through the number of words in the sentence
            if Weather[x] in insentence[z]:     #If 1 of the weather variations is in the sentence
                y = 0
                excep = False           #Boolean variable for detecting if an exception word is found
                while y < len(ExList):
                    if (ExList[y]) == insentence[z]:    #If the weather variation word is part of an exception word
                        y += 1
                        excep = True
                    else:
                        y += 1
                if y == len(ExList) and excep == False: #If the word is not in the exception list at all
                    return True         #Return True meaning that a valid weather variation is found
            z += 1
        x += 1
    else:
        return False                    #return false if no weather words found or they are in exceptions