Python Learning 06

Python Learning-day06

Switch/case statements in 1.python

Python does not have a switch/case statement, you can use the dictionary and function in a way to achieve switch/case effect.

As follows:

Note: from__future__ Import Division: The function is to let the results of a decimal in the display of decimals, not rounding.

2. Built-in functions

(1) function:

ABS ()---------> return absolute value

Max ()--------> Max

Min ()---------> Take minimum value

Len ()--------> take length

Divmod ()------> Take mould

Example: Divmod (5,2)

Output: (2,1)

Pow (): POW (2,3)---->2 3 powers: 8

POW (2,3,4)----->2^3%4:0 (2 of 3 power)

Callable (): Tests whether a function can be called

Isinstance (): Determine the type of an object

CMP (): Compares two strings for equality (equals returns 0, unequal returns-1)

Range (): Generates a sequence (array)

Xrange (): Same as Range () for big Data Operations (higher efficiency)

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(2)string function:

Str.capitalize (): Capitalize first letter

Str.replace (): Replace

Str.split (): Split string

Import string: module (not commonly used)

(3) Sequence processing function:

　　　

Python Learning 06