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Keyword. Description. Code example. False, True. Data values from the data type Boolean. False == (1 > 2), True == (2 > 1) and, or, not. Logical operators: (x and y) → both x and y must be True.
Defines a new function or class method. For latter, first parameter (“self”) points to the class object. When calling class method, first parameter is implicit. class beer: x = 1.0 # litre. def drink(self): self.x = 0.0. b = beer() # creates class with constructor. b.drink() # beer empty: b.x == 0.
Welcome to Python Practice Book. CHAPTER 1. About this Book. This book is prepared from the training notes of Anand Chitipothu. Anand conducts Python training classes on a semi-regular basis in Bangalore, India. Checkout out the upcoming trainings if you are interested. CHAPTER 2. Table of Contents. Getting Started. Running Python Interpreter.
a,b=b,a values swap ':'.join(['toto','12','pswd']) → 'toto:12:pswd'. a,*b=seq unpacking of sequence in str splitted on whitespaces → list of str. *a,b=seq item and list "words with spaces".split() → ['words','with','spaces'] x+=3 and increment ⇔ x=x+3 str splitted on separator str → list of str *=.
String Python Strings are sequences of characters. String Creation Methods: 1. Single quotes >>> 'Yes' 2. Double quotes >>> "Yes" 3. Triple quotes (multi -line) >>> """Yes We Can""" 4. String method >>> str(5) == '5' True 5. Concatenation >>> "Ma" + "hatma" 'Mahatma' Whitespace chars: Newline \n, Space \s, Tab \t ## Indexing and Slicing
The IF statement is used to check if a condition is true. Essentially, if the condition is true, the Python interpreter runs a block of statements called the if-block. If the statement is false, the interpreter skips the if block and processes another block of statements called the else-block.
1. Primitives. Numbers. Python has integers and floats. Integers are simply whole numbers, like 314, 500, and 716. Floats, meanwhile, are fractional numbers like 3.14, 2.867, 76.88887. You can use the type method to check the value of an object. >>> type(3) <type 'int'> >> type(3.14) <type 'float'> >> pi = 3.14. >> type(pi) <type 'float'> .
