Codility Lesson 1

iterations.py

def solution(N):
    # write your code in Python 3.6
    binaryNumber=bin(N);
    binaryGap=0;
    data=str(binaryNumber);
    finalList=[];
    dataList=[];
    #print(data);
    for index in range(len(data)):
        if(data[index]=="1" and "1" in dataList and "0" in dataList):
            #print(dataList);
            dataList.append(data[index]);
            #print(dataList);
            finalList.append(dataList);
            #print(finalList);
            dataList=[];
            #print(dataList);
            dataList.append(data[index]);
            #print(dataList);
        elif (data[index]=="1"and "1" in dataList and "0" not in dataList):
            dataList=[];
            dataList.append(data[index]);
        elif (data[index]=="0"and "1" not in dataList):
            dataList=[];
        elif (data[index]!="0"and data[index]!="1"):
            dataList=[];
        else:
            dataList.append(data[index]);
            
    maxLength=0;
    for index in range(len(finalList)):
        #print(maxLength);
        #print(len(finalList[index]));
        if(maxLength<len(finalList[index])-2):
            maxLength=len(finalList[index])-2;
            
    return maxLength;