day1 summary

print("hello world")
name = ' Wang Wei cock silly ' 
Print (name)
Wang Wei age_of_ silly cock = 18




















# Type: determining the type of a variable 
str1 = ' Hello ' 
Print (type (str1))

# value
str2 ='hello'
print(type(str2))
'''
Users interact with the program
Input:
input()
Output:
print()
'' ' 
# Allow the user to enter a user name 
name = the INPUT ( ' Please enter the name: ' )

# Output user name 
Print (name)

print(type(name))

# Double quotes 
str2 = " encounters Mickey Mouse " 
Print (str2)
 Print (of the type (str2))

# Triple quotes 
Str3 = '' '
Anhui Province
Hefei
Most cattle manner Institute
HEFEI
'''
print(str3)
print(type(str3))

'''
Priority control operation
1 by index value
2 slices
3 length (len)
4 members of the operation in and notin
5 overflow blank
6 segmentation
7 cycles
'' ' 
# 1 by the index value 
# forward 
str1 = ' Hello Tank! ' 
Print (str1 [0])   # H 
Print (str1 [. 9])   # H

# Anti-oriented 
Print (str1 [-2])   # K

# 2 sections (care regardless of tail) 
str1 = ' ! Tank Hello ' 
# 0- (5-1) 
Print (str1 [0:. 5 ])

#步长
print(str1[0:11])   #hello tank!
print(str1[0:11:2])   #hlotn!

# Length 
Print (len (str1))   # . 11

# 4 members in operation in and Not 
Print ( ' H '  in str1)
 Print ( ' H '  Not  in str1)

# 5. Remove blank Strip 
# spaces removes left and right sides of the string 
str1 = ' Hello Tank! ' 
Print (str1)
str1 = '  hello tank!   '
print(str1)
print(str1.strip())


# Removal of specified character 
str2 = ' ! Tank! ' 
Print (str2.strip ( ' ! ' ))

# 6 segmentation Split 
str1 = ' Hello Tank! ' 
# Be segmented according to the space within str1 
# C sliced out values stored in the [] list. 
Print (str1.split ( '  ' ))   # [ 'Hello', 'Tank!']

# 7 cycle 
# of str1 string traversal, print each character 
for Line in str1:
     Print (Line)

'''
Seven formatted output
#Placeholder:
% S: can replace any type
% D: replacement digital type
'''
'''
String formatting
Alternatively to the # 100% s
# Str1 = 'Dear customer, hello! Hello! Your phone bill this month deducted from% s yuan, left 0 yuan '100%

'''
'''
String type:
    Need to know
'''
#1.strip，lstrip,rstrip
str1 ='   hello wuyuefeng   '
print(str1)

# Remove the clear space 
Print (str1.strip ())
 # remove the spaces left 
Print (str1.lstrip ())
 # remove the right space 
Print (str1.rstrip ())

# 2 Lower, uppper 
str1 = ' Hello wuyuefeng ' 
# converted to lower 
Print (str1.lower ())
 # uppercase 
Print (str1.upper ())

# . 3 startsWith, endsWith 
str1 = ' Hello shadiao ' 
# determined character is equal to the beginning str1 Hello 
Print (str1.startswith ( ' Hello ' )) # ture 
# determined character is equal to the end of str1 shadiao 
Print (str1.endswith ( ' shadiao ' ) ) # ture

# 4.format (formatted output) three play 
# str1 = 'My name IS% S, S% Age My!'% ( 'Tank', 18 is) 
#   ; Print (str1)

# Way: according to the position sequence formatter 
Print ( ' ! My name IS {}, {} My Age ' .format ( ' Tank ' , 18 is ))
 # Second way: The index format 
Print ( ' My name IS {O }, Age {My}. 1! ' (the format. ' Tank ' , 18 is ))
 # three ways: by name format 
Print ( ' ! My name IS {name}, {My Age Age} ' . the format (Age 18 is =, name = ' Tank ' ))


# The Join string concatenation 
# given, string concatenation only 
# print ( ''. The Join ( 'Tank', '18 is', 'form GZ')) 
# The spaces, each of the strings in the list for splicing 
print ( '' .join ([ ' Tank ' , ' 18 is ' , ' from GZ ' ]))
 # the _, the list for each string of splicing 
Print ( ' _ ' .join ([ ' Tank ' , ' 18 is ' , ' from GZ ' ]))


# 7. The Replace: string replacement 
str1 =   ' My name IS WangWei, Age 73 is My! ' 
Print (str1)
str2 = str1. replace (' WangWei','sb')
print (str2)

# . 8, isdigit: determining whether a string is the number 
Choice = INPUT ( ' select [0,1, 2]: ' )
 # determines whether a user input selection of a digital 
Print (isdigit Choice ().)
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