Misra_Gries algorithm

Misra_Gries.py

def Misra_Gries(file,k):
    result = {}
    to_delete = []
    with open(file,"r") as f:
        for l in f.readlines():
            chars = l.split()
            for ch in chars:
                to_delete = []
                if ch in result:
                    result[ch] = result[ch] + 1
                else:
                    if len(result) < k-1:
                        result[ch] = 1
                    else:
                        for c in result:
                            if result[c] == 1:
                                to_delete.append(c)
                            else:
                                result[c] = result[c] - 1

                        for c in to_delete:
                            del result[c]
    return result