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method to check the value of an object. 1 >>> type(3) 2 <class 'int'> 3 >>> type(3.14) 4 <class 'float'> 5 >>> pi = 3.14 6 >>> type(pi) 7 <class 'float'> In the last example, piis the variable name, while 3.14is the value. You can use the basic mathematical operators: 1 >>> 3 + 3 2 6 3 >>> 3 - 3 4 0 5 >>> 3 / 3 6 1.0 7 >>> 3 / 2 3
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Go over sequence's values Algo: count number of e in the string. Go over sequence's index modify item at index access items around index (before / after) lst = [11,18,9,12,23,4,17] lost = [] for idx in range(len(lst)): val = lst[idx] if val > 15: lost.append(val) lst[idx] = 15 print("modif:",lst,"-lost:",lost) Algo: limit values greater
2 days ago · Floating-point numbers are represented in computer hardware as base 2 (binary) fractions. For example, the decimal fraction 0.625 has value 6/10 + 2/100 + 5/1000, and in the same way the binary fra...
immutable expression with just comas str as an ordered sequence of chars no a priori order, unique key, fast key access ; keys = base types or tuples. dict {"key":"value"} {} dictionary {1:"one",3:"three",2:"two",3.14:"π"} key/value associations. set {"key1","key2"} {1,9,3,0} set()
- numbers — Numeric abstract base classes. The numeric tower. Notes for type implementors. Adding More Numeric ABCs. Implementing the arithmetic operations.
- math — Mathematical functions. Number-theoretic and representation functions. Power and logarithmic functions. Trigonometric functions. Angular conversion. Hyperbolic functions.
- cmath — Mathematical functions for complex numbers. Conversions to and from polar coordinates. Power and logarithmic functions. Trigonometric functions. Hyperbolic functions.
- decimal — Decimal fixed point and floating point arithmetic. Quick-start Tutorial. Decimal objects. Logical operands. Context objects. Constants. Rounding modes. Signals.
• In addition, Python also has several built-in methods that support mathematical operations, such as abs(for absolute value) and minand max (for the minimum or maximum of a list of values) • Examples of use: value = math.cos(90) + math.sqrt(delta) print(abs(value)) print (math.log2 (16.0)) ==> 4.0 print (min (2, 4)) ==> 2 print (max (1, 5 ...
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