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Trick #1Reversing a string in Python>>> a = "codementor" >>> print "Reverse is",a[::-1] Reverse is rotnemedoc Trick #2Transposing a Matrix>>> mat = [[1, 2, 3], [4, 5, 6]] >>> zip(*mat) [(1, 4), (2, 5), (3, 6)] a = [1,2,3]Store all three values of the list in 3 new variables>>> a = [1, 2, 3] >>> x, y, z = a  >>> x 1 >>> y 2 >>> z 3 Trick #4a = ["Code", "mentor", "Python", "Developer"]Create a single string from all the elements in list above.>>> print " ".join(a) Code mentor Python Developer Trick #5List 1 = ['a', 'b', 'c', 'd']List 2 = ['p', 'q', 'r', 's']Write a Python code to printapbqcrds>>> for x, y in zip(list1,list2): ... print x, y ... a p b q c r d s Trick #6Swap two numbers with one line of code.>>> a=7 >>> b=5 >>> b, a =a, b >>> a 5 >>> b 7 Trick #7Print "codecodecodecode mentormentormentormentormentor" without using loops>>> print "code"*4+' '+"mentor"*5 codecodecodecode mentormentormentormentormentor Trick #8a = [[1, 2], [3, 4], [5, 6]]Convert it to a single list without using any loops.Output:- [1, 2, 3, 4, 5, 6]>>> import itertools  >>> list(itertools.chain.from_iterable(a)) [1, 2, 3, 4, 5, 6] [1, 2, 3, 4, 5, 6] Trick #9Checking if two words are anagramsdef is_anagram(word1, word2):  """Checks whether the words are anagrams.  word1: string  word2: string  returns: boolean  """ Complete the above method to find if two words are anagrams.from collections import Counter def is_anagram(str1, str2):  return Counter(str1) == Counter(str2) >>> is_anagram('abcd','dbca') True >>> is_anagram('abcd','dbaa') False Trick #10.Taking a string input.For example "1 2 3 4" and return [1, 2, 3, 4]Remember list being returned has integers in it.Don't use more than one line of code.>>> result = map(lambda x:int(x) ,raw_input().split()) 1 2 3 4 >>> result [1, 2, 3, 4] 

“How do I deal with a situation where someone else's child is misbehaving in my house and the parent says nothing?”Your house, your rules.Visitors need to abide by your rules. If your rule is to take shoes off by the door, visitors can’t just ignore you because they don’t need to take them off at home.Correcting the child is perfectly okay.I have playdates often for my children. The visiting children are told the rules by my own children (I rarely need to say anything). And sometimes I find out that my own child just follows the rules for reasons I wasn’t even aware of.For instance, my living room is a tiny dojo, with tatami mats in the middle. So people are not allowed to walk on the tatami with shoes, because that might damage the mats, and it’s unhygienic. However, my children watched me bow before starting my battōjutsu practice[1][1][1][1] and asked me why I bowed twice, then clapped my hands, then bowed once more, before I started practice. I explained to them that it’s a ritual to focus on the practice, and the hand-clapping was originally to ask the gods to pay attention and protect the student while practicing their dangerous arts.So I had to suppress a smile when one of her school friend asked my five year old daughter why you shouldn’t walk on the mats with your shoes, and my daughter said, “Because it offends my father’s sword gods and if they’re offended, they might not protect my father when he’s training with his sword.”I thought about correcting her, but I decided it was a pretty good explanation, although I was privately amused at my daughter’s school friend tiptoeing on her socks over the mats while warily eyeing the ceiling as if she expected a sword god to crash through and smite her while she and my daughter raced Lego cars over the mats.Footnotes[1] Martyn V. Halm's answer to What do you do at home that would be weird if you did it out in public?[1] Martyn V. Halm's answer to What do you do at home that would be weird if you did it out in public?[1] Martyn V. Halm's answer to What do you do at home that would be weird if you did it out in public?[1] Martyn V. Halm's answer to What do you do at home that would be weird if you did it out in public?

These 10 Python programming tricks by Sumit Raj of CodeMentor[1][1][1][1] amazed me:I’d happily like to share them here by courtesy Sumit Raj:Trick #1Reversing a string in Python>>> a = "codementor" >>> print "Reverse is",a[::-1] Reverse is rotnemedoc Trick #2Transposing a Matrix>>> mat = [[1, 2, 3], [4, 5, 6]] >>> zip(*mat) [(1, 4), (2, 5), (3, 6)] Trick #3a = [1,2,3]Store all three values of the list in 3 new variables>>> a = [1, 2, 3] >>> x, y, z = a  >>> x 1 >>> y 2 >>> z 3 Trick #4a = ["Code", "mentor", "Python", "Developer"]Create a single string from all the elements in list above.>>> print " ".join(a) Code mentor Python Developer Trick #5List 1 = ['a', 'b', 'c', 'd']List 2 = ['p', 'q', 'r', 's']Write a Python code to printapbqcrds>>> for x, y in zip(list1,list2): ... print x, y ... a p b q c r d s Trick #6Swap two numbers with one line of code.>>> a=7 >>> b=5 >>> b, a =a, b >>> a 5 >>> b 7 Trick #7Print "codecodecodecode mentormentormentormentormentor" without using loops>>> print "code"*4+' '+"mentor"*5 codecodecodecode mentormentormentormentormentor Trick #8a = [[1, 2], [3, 4], [5, 6]]Convert it to a single list without using any loops.Output:- [1, 2, 3, 4, 5, 6]>>> import itertools  >>> list(itertools.chain.from_iterable(a)) [1, 2, 3, 4, 5, 6] Trick #9Checking if two words are anagramsdef is_anagram(word1, word2):  """Checks whether the words are anagrams.  word1: string  word2: string  returns: boolean  """ Complete the above method to find if two words are anagrams.from collections import Counter def is_anagram(str1, str2):  return Counter(str1) == Counter(str2) >>> is_anagram('abcd','dbca') True >>> is_anagram('abcd','dbaa') False Trick #10.Taking a string input.For example "1 2 3 4" and return [1, 2, 3, 4]Remember list being returned has integers in it.Don't use more than one line of code.>>> result = map(lambda x:int(x) ,raw_input().split()) 1 2 3 4 >>> result [1, 2, 3, 4] Enjoy!Footnotes[1] 10 Neat Python Tricks Beginners Should Know | Codementor[1] 10 Neat Python Tricks Beginners Should Know | Codementor[1] 10 Neat Python Tricks Beginners Should Know | Codementor[1] 10 Neat Python Tricks Beginners Should Know | Codementor