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Python basics

巴扎黑
巴扎黑Original
2017-06-26 09:14:551984browse

Mathematical operators

##**exponent2 ** 38%Get the remainder22 % 8 6##///##*Multiplication3 * 515-Subtraction5 - 23 +Addition2 + 24
Operators Operations Example evaluates to
Quotient rounding 22 // 8 2
Division 22 / 8 2.75

## characters String Operator

OperatorString copyString concatenation
Operation Example Evaluates to *
'a' * 3 'aaa' +
'a' + 'b' 'ab'

3 basic data types and their conversions Function

Data typeint()float()str()
Conversion function Function return value Type int
Integer float
Floating point type str
String

Other functions

FunctionStringIntegerIntegerInteger typeInteger typeInteger type/Floating point type
Function return value type Function print()
Text output (to screen) input()
Text input (via keyboard) len()
Get the number of characters in a string round()
Find approximate number range(start value, end value, Step length)
Generate sequence random.randint(integer, integer)
Select a random integer sys.exit()
Terminate/Exit the program abs()
Find the absolute value

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