Python basic Syntax-2

Python basic Syntax-2

First, the Python programming style

1. Syntax Requirements:

(1) Indent unity: "Common error: Indentation error"

-->windows in the tab 4, Linux 8, but the display of the same length, not easy to distinguish.

A. Settings-Preferences-tab settings-tick Replace with spaces

B. View-display symbol-Show spaces and tabs

(2) Variables:

A. First character: letter, underline

B. Other parts: letters, underscores, numbers

C. Case-sensitive

2. Data type

(1) Number type:

A. Integral type: Boolean, long-shaped (L), standard integer

B. Non-integral: double-precision floating-point, plural, decimal

(2) Sequence type:

A. String (str)

B. Tuple (tuple)

C. Lists (list)

(3) Dictionary

(4) Collection type:

A. mutable set

B. Immutable collections

3. Operation:

+-*/Arithmetic by digital logic

Eg:2**32:2 32-Time Square

The remainder of the 10%2:10/2

4. Comments:

(1) Single-line Comment: #

(2) Multi-line Comment "" or "" "" ""

Second, user interaction

1, Import module Imports "in the current folder"

(1) from sys import argv: Import the argv from the SYS module

(2) Import a as B: Name a B

(3) Import Sys,os,tab: Import multiple modules

(4) Python default find file path: "Find from start to finish"

2, user input: Raw_input ("") read into the default string

(1) References:

(2) Formatted output

(3) Terminal output highlighting: \033[32;1m%s \033[0m

32: Green word; 31: Red word; 42: Green background ...

(4) Length judgment print len ()

A. Enter is not length

B. Space calculation length

(5) Go to space:. Strip () remove the opening and closing spaces of the input, but do not remove the middle space

Eg:name=raw_input (' Your Name: '). Strip ()

Third, circulation

1. For

(1) Showing 1-100

(2) Length

(3) from 1-100, each number interval 2 (odd)

(4) Count to 5 display text

2, continue, break

3. While

Python basic Syntax-2