Python Learning D2

Format the output. %s%d

# name = input (' Please enter name: ') # age = input (' Please enter Ages: ') # sex = input (' Please enter Gender: ') ## msg = ' My name is ' + name + ' My age is ' + ' my gender is ' + sex ' # Print (msg)  "------------info of Alex Li-----------Name  : Alex liage   : 22job   : Teacherhobbie:girl-------------End-----------------" "

#formatted output% placeholder s d#name = input (' Please enter name: ')#age = Int (input (' Please enter Ages: '))#job = input (' Please enter work: ')#hobby=input (' Please enter hobby: ')##msg = " '#------------Info of%s-----------#Name:%s#Age :%d#Job:%s#Hobbie:%s#-------------End-----------------#"% (name, name, age, job, hobby)#Print (msg)

#The second method of use#dic = {#' name ': ' Old boy ',#' age ':#' job ': ' Boss ',#' hobby ': ' Money ',# }#msg = " '#------------Info of% (name) s-----------#Name:% (name) s#Age :% (age) D#Job:% (Job) s#Hobbie:% (hobby) s#-------------End-----------------#" % dic#Print (msg)

# formatted output, in the formatted output, the mere representation of% needs to be expressed in percent.
# msg = ' My name is%s, this year%s, learning Progress 2% '% (' cool sister ', ' 18 ')
# Print (msg)

03,while Else

#while  Else when the while loop is interrupted by a break, it does not go to the ELSE program.

# count = 0 # While count <= 5: #      Count + = 1#     print ("Loop", Count)#     if count = = 4:break ## Else: #      Print ("Loop normal execution")#  print ("-----out of a while loop------")

04, operator.

# print (2 > 1 and 3 < 4 or 8 < ten and 4 > 5)
# The first case is a comparison operation before and after the logical operator
# Priority concept: () > Not > and > or, the same priority is calculated from left to right.

# Print (2 > 1 and 3 < 4 or 4 > 5 and 2 < 1)  # T#  print (1 > 2 and 3 < 4 or 4) ; 5 and 2 > 1 or 9 < 8)  # F#  print (1 > 1 and 3 < 4 or 4 > 5 and 2 > 1 and 9 > 8 or 7 < 6) # F

# The second case is a number before and after the logical operator

" " x or y if x true,return x,else y " " # Print (3 or 5) # Print (2 or 5) # Print (0 or 5) # Print ( -4 or 5) # Print (3 and 5) # Print (1 or 3 or 4 or 0) # Print (1 or 3 or 0)

# print (1 > 2 and 3 or 4)

" " conversion of numbers and BOOL values int---> BOOL  non 0 true, 0 falsebool---> int   true  1, False 0,'# print (BOOL) # Print (bool (0))

05, the first knowledge of coding.

Spy war film: Beep drops high and low level, 0101010

Storage of computer files, transfer of files with 010101010

Primary password: ASCII letters, numbers, special characters.

0000 0001 8 Bit = = 1 bytes One byte represents one character.

Character: the smallest unit that makes up the content. ABC a b C

China China

A 01100001

b 01100010

C 01100011

Universal code: Unicode

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

a:01100001 01100001

Medium: 01100011 01100001

Upgrade: 32-bit four bytes represents one character.

a:01100001 01100001 01100001 01100001

Medium: 01100011 01100001 01100011 01100001

Waste of resources.

For Unicode Upgrade: Utf-8.

Utf-8: A minimum of 8 digits to represent a character.

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 digits to represent a character

GBK: National standard.

a:01100001

Medium: 01100001 01100001

8 bit 1 byte

1024bytes 1kb

1024KB 1MB

1024MB 1GB

1024GB 1TB

Python Learning D2