Python - Concat two raw strings with an user name

Question

I have a raw string like this,

MasterFile_Name = r'C:\Users\ABC\X12345\DEF\File - Test.xlsx'

I want to pass the value of X12345 through a variable.To do that I am doing something like this

MyID = X12345

MasterFile_Name = r'C:\Users\ABC\' + MyID + '\DEF\File - Test.xlsx'

and

MasterFile_Name = r'C:\Users\ABC\' + MyID + r'\DEF\File - Test.xlsx'

They both are not working for me.

Kindly help me with this.

MasterFile_Name = r'C:\Users\ABC\{}\DEF\File - Test.xlsx'.format(MyID) — user3053452, Apr 04 '19 at 11:32
you can also use f-strings if you have python 3.7+ like so: `MasterFile_Name = rf'C:\Users\ABC\{MyID}\DEF\File - Test.xlsx'` — user3053452, Apr 04 '19 at 11:37

score 10 · Accepted Answer · answered Apr 04 '19 at 11:32

10

If the intention is to just concatenate it.

MyID = 'X12345'    
MasterFile_Name = r'C:\Users\ABC\{}\DEF\File - Test.xlsx'.format(MyID)    
print(MasterFile_Name)

answered Apr 04 '19 at 11:32

DirtyBit

1

I have a `LaTeX` raw string `text = r'$QFT=\frac{1}{\sqrt{} \begin{bmatrix}'.format('128')`. The snippet throws error `IndexError: Replacement index 1 out of range for positional args tuple`. – Rajesh Swarnkar Nov 07 '22 at 13:05
@RajeshSwarnkar: You should use rf-format string, like ``x = 128`` and ``text = rf"$QFT=\frac{{1}}{{\sqrt{x}}} \begin{{bmatrix}}"``. – ikreb Aug 07 '23 at 13:26

1 Answers1