Python full stack __format formatted output, while else, logical operator, encoding initial knowledge

1, formatted output. %d%s

Formatted output:% placeholder, d for Replace Integer, and s to replace string.

Name = input (' Please enter first Name: ') Age = input (' Please enter ages: ') Sex = input (' Please enter Gender: ') msg = ' My name is ' + ' + ' my age is ' + ' my gender is ' + sexprint ( Msg

msg = "------------info of Alex Li-----------Name  : Alex liage   : 22job   : Teacherhobbie:girl------------- End-----------------' Print (msg)

D represents the replacement integer number, and S indicates the string to replace.

Name = input ("Enter Name:") age = Int (input ("Enter Age:")) job = input ("Please enter work:") hobby = input ("Please enter hobby:") msg = "'------------info of %s-----------Name  :%sage   :%djob   :%shobbie:%s-------------end-----------------'% (name, name, age, Jo b, hobby) print (msg)

DIC = {    ' name ': ' Old boy ',    ' age ': +, '    job ': ' Boss ',    ' hobby ': ' money ',}msg = ' '------------info of% (name) s -----------Name  :% (name) SAge   :% (age) Djob   :% (Job) Shobbie:% (Hobby) s-------------end----------------- "% Dicprint (msg)

In the formatted output, you need to represent a pure percent percent, to be expressed as a double percent percent.

msg = ' My name is%s, this year%d, learning progress 2%%. '% (' cool sister ', ') print (msg)

2. While else

While else, when the loop of while is interrupted by a break, it does not go to the ELSE program.

Count = 0while Count <= 5:    count + = 1    print (' Loop ', count)    if Count = = 4:        breakelse:    print (' Loop normal execution ') print ("-----out of the while loop------")

3. Operators

1, before and after the logical character is the comparison operation

Priority concepts:

() > Not > and > or

The same priority is calculated from left to right.

Print (2 > 1 and 3 < 4 or 8 < ten and 4 > 5)

Print (2 > 1 and 3 < 4 or 4 > 5 and 2 < 1)

Print (1 > 2 and 3 < 4 or 4 > 5 and 2 > 1 or 9 < 8)

Print (1 > 1 and 3 < 4 or 4 > 5 and 2 > 1 and 9 > 8 or 7 < 6)

2, before and after the logical characters are digital

Or

X or Y, if x Ture,return x, Else Return y.

X!=0,x is Ture.

Print (3 or 5)

Print (2 or 5)

Print (0 or 5)

Print ( -4 or 5)

Print (1 or 3 or 0)

Print (1 or 3 or 4 or 0)

and

The rules of and are the exact opposite of or.

Print (3 and 5)

Print (1 > 2 and 3 or 4)

Conversion of numbers and bool values

int---> BOOL  non 0 True, 0 False
BOOL---> int   True  1, False 0

Print (bool (100))

Print (bool (0))

4, the first knowledge of coding

Spy war film: Drip drop drops high and low level, 0101010

The storage of computer files, and the transfer of files. 010101010

Primary Password Book:

ASCII code letters, numbers, special symbols.

0000 0001 8 Bit = = One byte, one byte represents one character.

Character: the smallest unit that makes up the content.

ABC a b C

China China

Universal code: Unicode

Create an initial 16-bit, two-byte representation of one character.

a:01100001 01100001

Medium: 01100011 01100001

After the upgrade 32 bits, four bytes represent one character.

a:01100001 01100001 01100001 01100001

Medium: 01100011 01100001 01100011 01100001

Waste of resources. (HDD, traffic, etc.)

For Unicode Upgrade: Utf-8

Utf-8: At least one character is represented by a 8-digit number.

A:01100001 (Letters are represented by 1 bytes.) )

European script: 01100001 01100001 (Europe is represented by 2 bytes.) )

Asian text-Medium: 01100001 01100001 01100001 (Europe is represented in 3 bytes.) )

Utf-16: A minimum of 16 bits is used to represent one character.

GBK: National standard.

a:01100001

Medium: 01100001 01100001

8 bits compose a byte

1024bytes 1kb

1024KB 1MB

1024MB 1GB

1024GB 1TB

Python full stack __format formatted output, while else, logical operator, encoding initial knowledge