Python Learning

Python tricks and tips Section 6: Dictionary Lesson 13: Inverting the Dictionary Code snippet to copy: dict1={‘a’: 1, ‘b’: 2,‘c’: 3,‘d’: 4,‘e’: 5,‘f’: 6, ‘g’: 7} dict2={v: k for k, v in dict1.items()} print(dict2)

Python tricks and tips Section 4: Operators Lesson 12: Chaining comparison operators Code snippet to copy: a = 17 b = 21 c = 11 print(c < a) print(a < b)

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Python tricks and tips Section 3: Matrix Lesson 11: Transposing a matrix Code snippet to copy: mat = [[8, 9, 10], [11, 12, 13]] new_mat=zip(*mat) for row in new_mat: print(row)

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Python tricks and tips Section 2: Strings Lesson 10: Checking if two words are anagrams Code snippet to copy: from collections import Counter def is_anagram(str1, str2): return Counter(str1) == Counter(str2) print(is_anagram(‘taste’, ‘state)) print(is_anagram(‘beach’, ‘peach’))

Python tricks and tips Section 2: Strings Lesson 9: Creating a single string Code snippet to copy: a = [“I”, “am”, “not”, “available”] print(“ “.join(a))

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Python tricks and tips Section 2: Strings Lesson 6: Reversing the string Code snippet to copy: a=”python” print(“Reverse is”, a[::-1])

Python tricks and tips Section 2: Strings Lesson 8: Printing out multiple values of strings Code snippet to copy: print(“on”*3+’ ‘+”off”*2)

Python tricks and tips Section 2: Strings Lesson 7: Splitting the string Code snippet to copy: a="Python is the language of the future" b=a.split() print(b)

Python tricks and tips Section 1: Lists Lesson 5: Analyzing the most frequent on the list Code snippet to copy: a = [1, 2, 3, 4, 2, 2, 3, 1, 4, 4, 4] print(max(set(a), key = a.count))