How to get "m" meters and "km" from string using regex?

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import re

# Sample string
string = "I ran 5km and then walked 300m."

# Pattern to extract meters and kilometers
pattern = r'(d+)s*(m|km)'

# Find all matches in the string
matches = re.findall(pattern, string)

# Print the matches
for match in matches:
    print(f"Value: {match[0]}, Unit: {match[1]}")

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Value: 5, Unit: km
Value: 300, Unit: m