I would like to know how to remove additional spaces when I print something.
Like when I do:
print 'Value is "', value, '"'
The output will be:
Value is " 42 "
But I want:
Value is "42"
Is there any way to do this?
Answers:
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Method 1
Don’t use print ..., (with a trailing comma) if you don’t want spaces. Use string concatenation or formatting.
Concatenation:
print 'Value is "' + str(value) + '"'
Formatting:
print 'Value is "{}"'.format(value)
The latter is far more flexible, see the str.format() method documentation and the Formatting String Syntax section.
You’ll also come across the older % formatting style:
print 'Value is "%d"' % value print 'Value is "%d", but math.pi is %.2f' % (value, math.pi)
but this isn’t as flexible as the newer str.format() method.
In Python 3.6 and newer, you’d use a formatted string (f-string):
print(f"Value is {value}")
Method 2
Just an easy answer for the future which I found easy to use as a starter:
Similar to using end='' to avoid a new line, you can use sep='' to avoid the white spaces…for this question here, it would look like this:
print('Value is "', value, '"', sep = '')
May it help someone in the future.
Method 3
It’s the comma which is providing that extra white space.
One way is to use the string % method:
print 'Value is "%d"' % (value)
which is like printf in C, allowing you to incorporate and format the items after % by using format specifiers in the string itself. Another example, showing the use of multiple values:
print '%s is %3d.%d' % ('pi', 3, 14159)
For what it’s worth, Python 3 greatly improves the situation by allowing you to specify the separator and terminator for a single print call:
>>> print(1,2,3,4,5) 1 2 3 4 5 >>> print(1,2,3,4,5,end='<<n') 1 2 3 4 5<< >>> print(1,2,3,4,5,sep=':',end='<<n') 1:2:3:4:5<<
Method 4
https://docs.python.org/2/library/functions.html#print
print(*objects, sep=’ ‘, end=’n’, file=sys.stdout)
Note: This function is not normally available as a built-in since the name print is recognized as the print statement. To disable the statement and use the print() function, use this future statement at the top of your module:
from future import print_function
Method 5
To build off what Martjin was saying.
I’d use string interpolation/formatting.
In Python 2.x which seems to be what you’re using due to the lack of parenthesis around the print function you do:
print 'Value is "%d"' % value
In Python 3.x you’d use the format method instead, so you’re code would look like this.
message = 'Value is "{}"'
print(message.format(value))
Method 6
>>> value=42
>>> print "Value is %s"%('"'+str(value)+'"')
Value is "42"
All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0