CODEWITHSUNDEEP
pythonencryption
TGMezza
TGMezza

Reputation: 11

How do I perform a simple substitution encryption in python?

Sorry if this is a really simple question but I'm very new to python and I'm confused as to where to even start with this.

What I need to do is substitute at least 5 letters from a sentence to produce a new encrypted sentence i.e "Hello my name is TGMezza" could be encrypted using ('H':'1', 'e':'2', 'l':'3', 'o':'4', 'm':'5') so it would instead read "12334 5y n15e is TGM2zza". I know this is probably a really simple question but I'd appreciate as much explanation of how to do this as possible because I'm such a newbie to this and all I've been able to find on my searches are much more complicated forms of encryption like a caesar cipher.

Upvotes: 0

Views: 492

Answers (2)

Abhijith Asokan
Abhijith Asokan

Reputation: 1875

replacements = { 'H':'1', 'e':'2', 'l':'3', 'o':'4', 'm':'5' }
s = "Hello my name is TGMezza"
for key in replacements:
    s = s.replace(key,replacements[key])
print(s)

Or

replacements = { 'H':'1', 'e':'2', 'l':'3', 'o':'4', 'm':'5' }
s = "Hello my name is TGMezza"
s = ''.join(replacements[x] if x in replacements else x for x in s)

Upvotes: 2

Faibbus
Faibbus

Reputation: 1133

You can use str.translate method to translate each character into another character:

translation = str.maketrans("Hello", "12345") # Creates the table to convert "H" to "1" etc.
# or:
tranlation = str.maketrans({'H':'1', 'e':'2', 'l':'3', 'o':'4', 'm':'5'})

text = "Hello my name is TGMezza"
print(text.translate(translation))

Upvotes: 1

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