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.

You are already using + on strings earlier in your function. What is it you're having trouble with? — khelwood
– khelwood, Commented Nov 26, 2015 at 14:52

NeilG · Accepted Answer · 2024-05-10 00:59:51Z

11

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$']

edited May 10, 2024 at 0:59

NeilG

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answered Nov 26, 2015 at 14:43

DisappointedByUnaccountableMod

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2 Comments

Rishab Over a year ago

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

Bhargav Rao Over a year ago

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

leocrimson · Accepted Answer · 2019-03-21 18:02:54Z

1

Bit out of context but can be helpful for people like me.

If a string list then,

strString = map(lambda x: '^' + x + '$', strString)

The resultant will be string list as well with prefix and suffix added to each string element of the list.

answered Mar 21, 2019 at 18:02

leocrimson

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2 Comments

DisappointedByUnaccountableMod Over a year ago

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

didlidoo Over a year ago

@DisappointedByUnaccountableMod, better answer there!

Alez · Accepted Answer · 2024-05-23 12:04:26Z

-1

$server = "name"

[string[]]$array_white_list = Get-Content -Path "$home\MonTool\whitelist.txt"

Set-Content -Path "$home\MonTool\signaleringen.txt" -Value "Server: $server"
Add-Content -Path "$home\MonTool\signaleringen.txt" -Value "Datum/Tijd: $datum_tijd"

Add-Content -Path "$home\MonTool\signaleringen.txt" -Value $proces_naam

Write-Warning 'De opgegeven servernaam is niet bekend; het script wordt gestopt.'

Write-Host "Datum/Tijd: $datum_tijd"
Write-Host "Het script is klaar met de uitvoering. Tot de volgende keer."

edited May 23, 2024 at 12:04

Alez

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answered May 22, 2024 at 20:01

tom

1

1 Comment

L Tyrone Over a year ago

Your answer could be improved with some explanatory text, it will make it more useful to others who may land here in the future.

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