find bitcoin cash addresses in a string using regex in python

Here's a sample code that extracts Bitcoin Cash addresses from a string using regular expressions in Python:


main.py
import re

# Sample string containing Bitcoin Cash addresses
input_string = "You can send Bitcoin Cash to this address: bitcoincash:qpk068a25z73d5jk5e5jft0a3tq3xncxu58t0n0ur6"

# Regular expression to match Bitcoin Cash addresses
regex_pattern = r'(?i)\b(bitcoincash:)?(q|p)[a-z0-9]{41}\b'

# Find all matches of the regular expression in input_string
matches = re.findall(regex_pattern, input_string)

# Print the matches
for match in matches:
    print(match[1] + match[2:])
477 chars
15 lines

The output would be:


main.py
qpk068a25z73d5jk5e5jft0a3tq3xncxu58t0n0ur6
43 chars
2 lines

The regular expression used in this code matches strings that start with the string "bitcoincash:" (case-insensitive) or not, followed by either "q" or "p", and 41 alphanumeric characters. The alphanumeric characters should not be preceded or followed by any other alphanumeric characters to avoid matching false positives.

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