This is the code that I used to solve the third problem in the weekly problem set on brilliant.org

WeeklyProblemSetProblem3.py

def removeSpace():

    p = ''

    filin = open("pi.txt")

    for y in filin:

        for i in y :
            

            if not i == '\n':

                if not i == ' ':

                    p += i

    filin.close()

    return p

def piTest():

    done = []

    p = removeSpace()

    counter = 1    

    for i in range(len(p)):

        flag = True

        if i == len(p) - 1:

            break

        while flag:

            if p[i] == p[i+counter]:

                counter += 1

            else:

                if counter> 1:

                    done.append(counter)

                counter = 1
                flag = False

    return done

print "Reqd value is:", max(piTest())