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2025-01-17 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >
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This article mainly introduces "what are the three output formats in python". In daily operation, I believe many people have doubts about what the three output formats are in python. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubts about "what are the three output formats in python?" Next, please follow the editor to study!
Three output formats of python
Environment: pycharm + python3.8
1.% (not recommended)
Format: format string% (output item 1, output item 2, … Output item n).
C characters s string d signed integers (10) o signed integers (8) x or X signed integers (16) f or F floating point numbers
Use:
Case one
Num1= 20num2 = 30print ('num1=%d, num=%d'% (num1, num2))
Output:
Num1=20, num=30
Case two
Num = 3.141526print ('% 0.2f'% num) # keep two decimal places print ('.1f'% num) # occupy 10 spaces, right-aligned print ('%-10.2f'% num) # occupy 10 spaces, align left
Output:
2. Format
Format: format (output item [, format string]), where the format string is selectable.
Case one
Num1= 20num2 = 30print ('num1= {}, num2= {}' .format (num1, num2))
Output:
Num1=20, num=30
Case two
Str1 = 'small bath' str2 = 'small cold' print ('{0} {1} {1} {0} '.format (str1, str2)) # mapping variable values from 0
Output:
A little bath, a cold bath.
Case three
Print ('{meng} {mu} '.format (mu=' Xiaomu', meng=' Xiaomeng'))
Output:
Xiaomeng Xiaomu
Case four
Right alignment ^ middle alignment = (for numbers only) to complete # 0displacement 3.14 after the decimal point | *: fill in extra blanks (easy to observe) | print ('--{0displacement 7} '.format)
Output:
Case five
Print ('decimal: {0 d}, hexadecimal: {0 x}, octal: {0 o}, binary: {0 b}' .format (31)) # with'# 'with the prefix print (' hexadecimal: {0orex}, octal: {0freuo}, binary: {0freb} '.format (31))
Output:
Decimal: 31, hexadecimal: 1f, octal: 37, binary: 11111
Hexadecimal: 0x1f, octal: 0o37, binary: 0b11111
Case 6
# convert to percentage and retain two decimal places print ('percentage: {: .2%}' .format (0.555555)) # retain two decimal places print ('retain two decimal places: {: .2}' .format (0.555555))
Output:
Percentage: 55.56%
Keep two decimal places: 0.56
Case 7
Print ('{:} *-* {:} '.format (1,-1)) # shows the symbol print (' {: +} *-* {: +} '.format (1,-1)) # if it is a positive number, leave the space print (' {:} *-* {:} '.format (1,-1)) # -, and' {:} {:} 'consistent print (' {: -} *-* {: -} '.format (1,-1))
Output
3. F-string
Usage: f'{}'
Case one
Name = "small bath" age = 20print (f'my name is {name}, I am {age} this year.')
Output:
My name is Xiao Mu. I'm 20 years old this year.
Case two
Name = "small bath" age = 20print (f'my name is {name},'f'is {age} this year.') # Multiline usage
Output:
My name is Xiao Mu. I'm 20 years old this year.
Case three
Num = 3.141526print (F' retains two decimal places: {num:.2f}')
Output:
Keep two decimal places: 3.14
For more usage, please refer to the second point above: format
Contrast
F-string: formatted string literals, formatting string constants.
The function is the same as%-formating, str.format (), easy to operate and fast.
At this point, the study on "what are the three output formats in python" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!
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