Chapter 5 Python: Numerical Types
Difference between .trunc and .floor
.trunc will only truncate the float but .floor will round the float down
Booleans
True or False types
str output
User-friendly Output
Correct way of creating a complex number
Using the "complex()" function
Correct way of converting literals (Hexa into binary, etc...)
Using the prefix of the number system. Hex, Oct, and Bin
Three types of division
classic, true, and floor
How does the python interpreter convert different types within one expression
converts the less simplistic type into the more complex type, an int and a floats sum would be a float type
true our false? A variable must be declared before hand
false, variables are declared when given a value
Hexidecimal
A base-16 number system that uses sixteen distinct symbols 0-9 and A-F to represent numbers from 0 to 15.
Fractional
A type containing a numerator and Denominator. Fraction (1, 3)
Fixed Precision
A type containing decimals after the whole number. 1.000345, 1.05
floating point
A type that represents numbers with fractional parts. 3.4141, 4.5678
Complex Numbers
All numbers, a combination of a real and an imaginary numbers. a + 3i
Integer
All whole numbers (both positive and negative) and zero.
Expression Operators
Any simple used in coding to add, subtract, multiply, divide, etc....
repr output
As-code output
Decimal
Base 10 number system
Sets
Collections of objects with numeric operations
Built in functions and modules
Functions such as round, math, and random. All are imported
mathematical functions
Functions, such as the square root and rounding functions that manipulate quantitative data
Utility Modules
Modules such as "math, random" that broaden the tool set available in python
Binary
The binary number system is base 2, using only bits 0 and 1.
Octal
The octal number system is base 8, starting with 0o and followed by using only digits 0 through 7.
Mixed Operation instance (4 * 5 + 6 / 5)
The python interpreter uses precedence within the code to determine what happens first, follows basic math rules (PEMDAS)
True or False? Parentheses will override the precedence rule in the interpreter
true
True or false? you are allowed to mix numerical types within expressions
true
