How to add prefix and suffix to a string in python

Question

#!/usr/bin/python
import sys,re
import subprocess

def funa():
        a = str(raw_input('Enter your choice [PRIMARY|SECONDARY]: ')).upper().strip()
        p = re.compile(r'.*'+a+'.*')
        result = p.findall(a)
        str1 = ''.join(result)
        print str1
funa()

I have above code in test.py file and When I run this code and give my choice as SECONDARY, I am getting the output SECONDARY as string:

[oracle@localhost oracle]$ ./test.py Enter your choice [PRIMARY|SECONDARY]: SECONDARY SECONDARY

I want to add prefix as '^' and suffix as '$' to add in my output. Which should be a string only. Means I want to get the output as :

^SECONDARY$

Please let me know how can I achieve this.

Solution

You can concatenate those onto the string using +.

For example (for Python 2):

print "^"+str1+"$"

Or without + using f-strings in Python 3:

print( f“^{str}$” )

Or if you want to add a prefix to every string in a list:

strings = ['hello', 1, 'bye']
decoratedstrings = [f"^{s}$" for s in strings]

result:

['^hello$', '^1$', '^bye$']

Comments

[khelwood]

You are already using + on strings earlier in your function. What is it you're having trouble with?

[Rishab]

@barny thanks it worked for me. Not sure why its downgrade.

[Bhargav Rao]

Though I did not downvote, I guess the downvoter expects a bit of explanation about the code, something other than try this.

[DisappointedByUnaccountableMod]

Rather than map() and lambda, wouldn't it be simpler to use a comprehension like strings=[f"^{s}$" for s in strings]?