defmain():

raw,result=second_step(file_path)

im,raw,result=second_step(file_path)

raw_ary,result_ary=third_step(raw,result)

fourth_step(raw_ary,result_ary)

raw_str,result,index=fourth_step(raw_ary,result_ary)

hint_path="zigzag/{}".format("hint.png")

five_step(im,index,hint_path)

six_step(raw_str)

deffirst_step(url,file_path,user,password):

value="".join([chr(palette[i])foriinrange(len(palette))])

table=str.maketrans(index,value)

result=raw.decode("latin1").translate(table).encode("latin1")

returnraw,result

returnim,raw,result

defthird_step(raw,result):

deffourth_step(raw_ary,result_ary):

zero=raw_ary.pop(0)

raw_ary.append(zero)

assertlen(raw_ary)==len(result_ary)

raw= []

result= []

index= []

foriinrange(len(raw_ary)):

raw_i=raw_ary[i]

result_i=result_ary[i]

ifraw_i!=result_i:

raw.append(raw_i)

result.append(result_i)

index.append(i)

foriinrange(len(raw)):

raw_str+=chr(raw[i]).encode("latin1")

returnraw_str,result,index

deffive_step(im,index,hint_path):

im2=Image.new("RGB",im.size)

colors= [(255,255,255)]* (im2.size[0]*im2.size[1])

foriinindex:

colors[i]= (0,0,255)

im2.putdata(colors)

im2.save(hint_path)

print("Hint in {}".format(hint_path))

defsix_step(raw_str):

raw_dec=bz2.decompress(raw_str)

strs=raw_dec.decode("latin1").split(" ")

results=set()

foriinrange(len(strs)):

s=strs[i]

ifnotsinpy2keywords.kwlist:

results.add(s)

print(results)

if__name__=="__main__":

Solve Problems inhttp://www.pythonchallenge.com

result:http://www.pythonchallenge.com/pc/ring/bell.html auth=(repeat, switch)

- author use python2 keyword, but there is some different with python3

- use assert to do assert

- tobytes() method for Image in PIL: Return image as a bytes object.

- getpalette() method for Image in PIL: Returns the image palette as a list.

result:http://www.pythonchallenge.com/pc/hex/speedboat.html

kwlist= ['and','as','assert','break','class','continue','def','del','elif','else','except','exec','finally','for','from','global','if','import','in','is','lambda','not','or','pass','print','raise','return','try','while','with','yield']