How to save a multi-line string in a single line and without multiple white spaces

Question

I am trying to save to a txt a multi-line string without the newline and any multiple spaces:

with open('test.txt','w') as f:    
f.write( r"""<rect
       x="0"
       y="0"
       width="%s"
       height="%s"
       stroke="red"
       stroke-width="1"
       fill-opacity="0"  />""" %(3,4)+"\n" )

When I open the file cat 'text.txt' the file is on multiple lines. How can I have the code written in a single line without multiple white spaces ?

<rect x="0" y="0" width="3" height="4" stroke="red" stroke-width="1" fill-opacity="0" />

Without using for instance "".join() or other methods which will affect the readability of the code?

Using .replace('\\n', '') will not delete the multiple white space.

Answer 1

Add .replace('\\n', '') at the end of the string.

Edited: And by "at the end of the string", I mean the multi-line one, eg:

f.write( r"""<rect
       x="0"
       y="0"
       width="%s"
       height="%s"
       stroke="red"
       stroke-width="1"
       fill-opacity="0"  />""".replace('\n', '') %(3,4)+"\n" )
                              ^^^^^^^^^^^^^^^^^^
                                     HERE

Another possibility is to benefit from Python's automatic concatenation of strings, as follows:

f.write('<rect '
        'x="0" '
        'y="0" '
        'width="%s" '
        'height="%s" '
        'stroke="red" '
        'stroke-width="1" '
        'fill-opacity="0"/> ' % (3,4) + '\n')

Answer 2

I'm guessing that you want all the code in 1 line for the multi line string?

then just do it like this

f.write(r"""<rect x="0" y="0" width="%s"

ect...

That way you are putting everything on one line

Hope this helps