Python 3.6 - pass a variable inside a string command

Question

In Python 3.6 I am trying to reference a variable from outside to inside a byte object.

This is a section of my code that I have simplified to try and explain the point.

#set my variable here
RECORDID = 'MyRecordID'

#create a byte object where the RECORDID needs to be passed to
output_buffer1 = b"<?xml version=\"1.0\" encoding=\"UTF-8\"?><AMS<TransportControl><RecordCue ID=RECORDID /></TransportControl></AMS>"

My byte object is an essentially an XML string that I am passing to an external API, but I need to be able to put the RECORDID inside that XML string at this position

<RecordCue ID= here />

so that the result is

<RecordCue ID='MyRecordID' />

Basically, how do I reference that variable from within the byte object? I have tried putting a percent sign and a plus sign, brackets etc around the variable name but it wont work. It always outputs exactly what I type.

Any help would be greatly appreciated.

Thank you

yes i have. anything i type inside quotes after the b gets taken literally as its typed. — yekootmada, Feb 21 '17 at 14:03
Since you're on Python 3.6 you could also use the f-strings: `f"".encode('utf-8')`. I was expecting `fb"somestring"` or `bf"somestring"` to work as well, but it is not seem to be working. o_O — Ashwini Chaudhary, Feb 21 '17 at 14:12
Hi there, thanks for your suggestion, ive tried changing to an f string as you suggest, but no joy. Frustrating! — yekootmada, Feb 21 '17 at 14:31
Have a look at concatenation: https://docs.python.org/3/tutorial/introduction.html#strings — Christian König, Feb 21 '17 at 14:39
For a more advanced approach, have a look at Format Strings https://docs.python.org/3/library/string.html#formatstrings — Christian König, Feb 21 '17 at 14:40
solved by splitting the string into parts and concatenating around the variables. Thanks all — yekootmada, Feb 22 '17 at 13:44

Python 3.6 - pass a variable inside a string command

0 Answers0