Hello everyone, meet again, I'm your friend Quanstack Jun.
In fact, it was a very simple function, but I forgot how to wrap the output every time I use it, so I think it's better to make a record myself, so as not to check it every time.
Print function usage:
print(value, …, sep=’ ’, end=’\n’, file=sys.stdout, flush=False)
Prints the values to a stream, or to sys.stdout by default.
Optional keyword arguments:
file: a file-like object (stream); defaults to the current sys.stdout.
sep: string inserted between values, default a space.
end: string appended after the last value, default a newline.
flush: whether to forcibly flush the stream.
It can be seen from the above that as long as the sep parameter is set to a newline, the output can be newline. The following is a small chestnut:
l = [(1, 2), (3, 4)]
d0 = dict((key, value) for (key, value) in l)
d1 = {key: value for (key, value) in l}
print(d0, d1, sep='\n')
#Output:
{1: 2, 3: 4}
{1: 2, 3: 4}
format
”’
Alignment of strings of desired length can be specified:
< (default) left-aligned
> right-aligned
^ center alignment
= (for numbers only) padded after the decimal point
”’
print("{0:<20}{1:<20}{2:<8}{3:<8}".format(gene_id, p.group(), p.span()[0], p.span()[1]))
"' formatting specifiers can contain a presentation type to control formatting.
For example, floating point numbers can be formatted in general format or in powers.
'b' - binary.Output the number in base 2.
‘c’ – character.Convert the integer to the corresponding Unicode string before printing.
‘d’ – Decimal integer.Print the number in base 10.
‘o’ – Octal.Output the number in base 8.
'x' - Hexadecimal.The number is output in base 16, with lowercase letters for digits above 9.
‘e’ – Power symbol.Print numbers in scientific notation.Use 'e' for power.
‘g’ – General format.Output the value in fixed-point format.When the value is particularly large, it is printed in power form.
'n' - Number.Same as 'd' when the value is an integer, same as 'g' when the value is a float.The difference is that it inserts a number separator based on the locale.
‘%’ – Percentage.Multiply the value by 100 and print it in fixed-point('f') format with a percent sign after the value.
”’
print '6:\t|{0:b}'.format(3)
print ‘7:\t|{0:c}’.format(3)
print '8:\t|{0:d}'.format(3)
print '9:\t|{0:o}'.format(3)
print '10:\t|{0:x}'.format(3)
print '11:\t|{0:e}'.format(3.75)
print '12:\t|{0:g}'.format(3.75)
print '13:\t|{0:n}'.format(3.75) #float
print '14:\t|{0:n}'.format(3) #integer
print '15:\t|{0:%}'.format(3.75)
If you want {} to represent itself rather than as a placeholder, you can use braces to escape, i.e. { {}}
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