CCF Python問題解(100点)201703-3 Markdown

import re

raw = ""

while True:
    try:
        inputStr = input()
        Str1 = re.sub("_(.*?)_", "\g<1>", inputStr)  # re
        Str2 = re.sub("\[(.*?)\]\((.*?)\)", '\g<1>', Str1)

        raw += Str2 + '
'
    except:
        break
list1 = raw.split('
')
new = ""
listflag = False
graphflag = False
for index in range(len(list1)):
    i = list1[index]
    list2 = i.split(' ', 1)
    if list2[0]:  #    
        if list2[0] == '*':  #     
            if listflag == False:
                new += "

"
                listflag = True
            new += "
" + list2[1] + "
"
            if not list1[index + 1].startswith('*'):
                new += "
"
                listflag = False
        elif list2[0].count('#'):  #  #   
            number = len(list2[0])
            new += "{}".format(str(number), list2[1], str(number)) + '
'
        else:  #   
            if graphflag == False:
                new += "
"
                graphflag = True
            new += i
            if list1[index + 1].startswith('*') or list1[index + 1].startswith('#') or len(list1[index + 1]) == 0:
                new += ""
                graphflag = False
            new += "
"
print(new.strip('
'))