NP3 formatted output (I)

'''
NP3 Format output （ One ）
Niu Niu 、 Niu Mei and Niu cola are Nowcoder Study Python Language , Now give them one of the three names name,
Suppose the input is name by Niuniu, The output I am Niuniu and I am studying Python in Nowcoder!
Please output the corresponding English sentence according to the above sentence pattern .
'''
print('=== Method 1 ===')  
name = input('Please input name: ')
print("I am {} and I am studying Python in Nowcoder!".format(name))

print('=== Method 2 ===')
print('I am ' + name + ' and I am studying Python in Nowcoder!')

print('=== Method 3 ===')
print('I am %s and I am studying Python in Nowcoder!'%name)

print('=== Method4 ===')
print(f'I am {name} and I am studying Python in Nowcoder!')

'''>>> format Usage of <<<'''
# Basic usage
# 1. according to {} The order of matches the values in parentheses
s = '{} is a {}, and have worked in this company for {} years.'.format('keven','worker',1.5)
print(s)

# 2. Match parameters by index
s = 'the name of {1} is {0}'.format('keven', 'teacher')
print(s)

# 3.1 Match parameters by parameter name
s = '{name} is a {job}'.format(name='keven',job='teacher')
print(s)

# 3.2 Empathy , If the parameter has been determined , Can be used directly {} Format reference
# With f The beginning indicates that... Within braces is supported in the string python expression   This usage 3.6 Later support
name = 'keven'
job = 'teacher'
s = f'{name} is a {job}'
print(s)

# 4.1 By index , Parameter names to mix and match
s = 'My name is {} , I am {} years old , and work as an {job}'.format('keven',27,job='Electronic Engineer')
print(s)
# It should be noted that , The named parameter must be written last . Responsible for compiling and reporting errors

# Advanced usage
# 1. Through the properties of the object
class Names():
    name1='keven'
    name2='tom'
s = 'hello {n.name1} ! I am {n.name2}'.format(n=Names)
print(s)

# 2. Support partial reference to parameters
s = 'The word is {s} , {s[0]} is initials'.format(s='world')
print(s)

# 3. Digital processing
# How to use format Keep two decimal places ？ Need to use :.2f, In use % When formatting, we use %:.2f
s = 'π is {:.2f}'.format(3.1415926)
print(s)
s1 = 'π is %.2f'%3.1415926
print(s)

# String interception
s = '{:.3}'.format('Hello')
print(s)

# Put a thousand after the number
s = '{:,}'.format(888888888)
print(s)

# Binary conversion of numbers
# 10 Base number -> 2 Base number
s = '{:b}'.format(10)
print(s)

# 10 Base number -> 8 Base number
s = '{:o}'.format(10)
print(s)

# 10 Base number -> 16 Base number
s = '{:x}'.format(10)
s1 = '{:X}'.format(10)
print(s,s1)

# 4. Filling of characters
# It can be done by : Symbol ^ Numbers are used to fill the string . The number is the total length of the filled string .
s = '{:-^40}'.format('Hello World!')
print(s)
print('-'*40)

# 5. list、tuple The split
foods = ['fish', 'beef', 'fruit']
s = 'i like eat {} and {} and {}'.format(*foods)
# i like eat fish and beef and fruit
print(s)

foods = ['fish', 'beef', 'fruit']
s = 'i like eat {2} and {0} and {1}'.format(*foods)
# i like eat fruit and fish and beef
print(s)

dict_temp = {'name': 'Lily', 'age': 18} 
# Dictionaries need to use ** To break up
s = 'My name is {name}, i am {age} years old'.format(**dict_temp)
print(s) # My name is Lily, i am 18 years old

# reference link : https://blog.csdn.net/qq_42855293/article/details/118480087