On Python string formatted output (format/printf) _python

The Python string is formatted with the character% format 1 format 2 character% (variable 1, variable 2), and the% format represents the type that accepts the variable. Examples of simple uses are as follows:

# Example: String formatting

Name = ' 17jo '
print ' www.%s.com '%name
>> www.17jo.com

Name = ' 17jo '
Zone = ' com '
print ' www.%s.%s '% (name,zone)
>> www.17jo.com

The string is formatted with a different format symbol, representing the different types to be converted, as shown below.

Format Symbol Presentation type

%s string
%d/%i decimal Integer
%u decimal integers
%o octal integers
%x/%x hexadecimal integer
%e/%e Science Count
%f/%f floating-point numbers
%% OUTPUT%

When the format symbol is a number, it can be preceded by an amount and a fill position such as:%[0][total digits [.] [Decimal places] to set the style to be converted, using the following methods:

# Example: Number formatting

nyear = 2018
Nmonth = 8
Nday = 18
# format Date%02d number into two-bit integer vacancy 0
print '%04d-%02d-%02d '% (nyear,nmonth,nday)
>> 2018-08-18 # Output results

Fvalue = 8.123
print '%06.2f '%fvalue # preserves 2-bit decimal floating-point type with width 6
>> 008.12 # Output

print '%d '%10 # output decimal
>> 10
print '%o '%10 # output octal
>> 12
print '%02x '%10 # output two-bit hexadecimal, letter lowercase blank fill 0
>> 0a
print '%04x '%10 # output four-bit hex, letter-Uppercase vacancy supplement 0
>> 000A
print '%.2e '%1.2888 # with scientific notation output floating-point type keep 2 decimal digits
>> 1.29e+00

The above article on the Python string format output (format/printf) is a small series to share all the content, hope to give you a reference, but also hope that we support the cloud habitat community.