![]() > False or True # Second argument is evaluated. True or: > True or False # Short-circuited at first argument. > True and True # Second argument is evaluated. > False and True # Second argument is evaluated. ![]() True and: > True and False # Short-circuited at first argument. Code Sample print(bool(4 > 2)) # Returns True as 4 is greater than 2 If x is false or omitted, this returns False otherwise it returns True. x is converted using the standard Truth Testing Procedure. This function returns a Boolean value, i.e. No second argument is allowed if a string is used as an argument > complex("1.1+3.5j")īool() is a built-in function in Python 3. ![]() The arguments used to call the complex constructor can be of numeric (including complex) type for either parameter: > complex(1, 1)Ī string can also be used as the argument. To create a non-zero real part complex number, add an imaginary literal to a floating point number: > a = 1.1 + 3.5j No literal exists for creating a complex number with non-zero real and imaginary parts. The imaginary part of a complex number can be created using an imaginary literal, this results in a complex number with a real part of 0.0: > a = 3.5j The float constructor can also be used to make numeric representations of NaN (Not a Number), negative infinity and infinity (note that strings for these are case insensitive): > float('nan')Ĭomplex numbers have a real and an imaginary part, each represented by a floating point number. The float constructor will also make float objects from strings that represent number literals: > float('1') However, the float constructor allows for creating float objects from other number types: > a = 4 The float constructor is another way to create float objects.Ĭreating float objects with floating point literals is preferred when possible: > a = 3.14 # Prefer floating point literal when possible. Note that leading and trailing zero(s) are valid for floating point literals. Likewise, positive float objects can be prefixed with a unary + (plus) operator with no space before the literal. Numeric literals do not contain a sign, however creating negative float objects is possible by prefixing with a unary - (minus) operator with no space before the literal: > -3.141592653589793 > 3.14e+2 # '+' not required but can be used for exponent part. > 3e-1 # Negative value after e moves the decimal to the left. > 3e1 # Positive value after e moves the decimal to the right. More information found on the IEEE site.įloat objects can be created using floating point literals: > 3.14 Nearly all implementations of Python follow the IEEE 754 specification: Standard for Binary Floating-Point Arithmetic. Some general information about floating point numbers and how they work in Python, can be found here. Python is a general purpose programming language which is dynamically typed, interpreted, and known for its easy readability with great design principles.įreeCodeCamp has one of the most popular courses on Python.
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