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How to use map_char method in keyboard

Best Python code snippet using keyboard

challenge01.py

Source:challenge01.py

...67import string8import unittest910def map_char(c):11	if not (c.isalpha() and c.islower()):12		return c13	a = ord('a')14	# map the character as c+215	mc = (ord(c) - a + 2) % 26 + a16	return chr(mc)17	1819data = "g fmnc wms bgblr rpylqjyrc gr zw fylb. rfyrq ufyr amknsrcpq ypc dmp. bmgle gr gl zw fylb gq glcddgagclr ylb rfyr'q ufw rfgq rcvr gq qm jmle. sqgle qrpgle.kyicrpylq() gq pcamkkclbcb. lmu ynnjw ml rfc spj."20print "".join([map_char(x) for x in data ])212223intab = "".join([chr(x) for x in range(ord('a'), ord('z')+1)])24outtab = "".join([map_char(x) for x in intab])25transtab = string.maketrans(intab, outtab)2627print data.translate(transtab)2829url = "http://www.pythonchallenge.com/pc/def/map.html"30print url.translate(transtab)313233# run unit test34class TestMapChar(unittest.TestCase):35	36	def setUp(self):37		print "setUp ..... "38	39	40	def test_simple(self):41		# usual case42		self.assertEqual(map_char('a'), 'c')43		self.assertEqual(map_char('c'), 'e')44		self.assertEqual(map_char('p'), 'r')45		46		# surpass case47		self.assertEqual(map_char('y'), 'a')48		self.assertEqual(map_char('z'), 'b')49		50		# not in scope51		self.assertEqual(map_char('@'), '@')52		self.assertEqual(map_char('*'), '*')53		self.assertEqual(map_char('9'), '9')54		self.assertEqual(map_char('/'), '/')55	56	def tearDown(self):57		print "tearDown .... "58		
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main.py

Source:main.py

1def max_char(string):2    map_char = {}3    max_num = 04    max_num_char = ""5    for letter in string:6        map_char[letter] = map_char[letter] + 1 if letter in map_char else 17        if map_char[letter] > max_num:8            max_num = map_char[letter]9            max_num_char = letter10        # if letter not in map_char:11        #     map_char[letter] = 112        # else:13        #     map_char[letter] += 114    # for letter in map_char:15    #     if map_char[letter] > max_num:16    #         max_num = map_char[letter]17    #         max_num_char = letter18    return max_num_char...

Longest_Substring_Without_Repeat_Char.py

Source:Longest_Substring_Without_Repeat_Char.py

1# 11 July 20212class Solution:3    def lengthOfLongestSubstring(self, s: str) -> int:4        res=15        i=06        map_char= dict()7        if len(s)==0:8            return 09        map_char[s[i]] = 010        for j in range(1,len(s)):11            try:12                if str(map_char[s[j]]):13                    if map_char[s[j]]<i:14                        pass15                    else:16                        i= map_char[s[j]]+117                    map_char[s[j]]= j18            except:19                map_char[s[j]] = j20            res= max(res, j-i+1)...

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