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Home Interviews encode and decode string function in python? – MindStick
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1 Answers

ICSM Computer
ICSM Computer 17 Sep 2025
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Predefined (built-in / library) functions in Python that handle encoding and decoding.

1. String encode() method

Converts a Python string (str) to bytes.

text = "Hello नमस्ते"
encoded = text.encode("utf-8")   # str → bytes
print(encoded)   # b'Hello \xe0\xa4...'

2. Bytes decode() method

Converts bytes back to string.

decoded = encoded.decode("utf-8")   # bytes → str
print(decoded)   # "Hello नमस्ते"

3. Base64 predefined functions (from base64 module)

import base64

text = "Python Encoding"

# Encode string to Base64
encoded = base64.b64encode(text.encode("utf-8"))
print(encoded)  # b'UHl0aG9uIEVuY29kaW5n'

# Decode Base64 back to string
decoded = base64.b64decode(encoded).decode("utf-8")
print(decoded)  # Python Encoding

So the predefined functions you’ll use most often are:

  • str.encode(encoding)
  • bytes.decode(encoding)
  • base64.b64encode()
  • base64.b64decode()
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