Python 3.3+ipaddressfunction

ipaddress.summarize_address_range()

range operations

Turns a 'from address to address' range into the smallest list of networks that covers it exactly.

Syntax

ipaddress.summarize_address_range(first, last)

Both ends are inclusive, and the function takes address objects, not strings. A range rarely fits a single network: 10.0.0.0 to 10.0.0.10 yields three (/29, /31, /32). Like collapse_addresses(), it returns a generator; last below first raises ValueError, mixed versions raise TypeError.

Examples

import ipaddress
first = ipaddress.IPv4Address('10.0.0.0')
last = ipaddress.IPv4Address('10.0.0.10')
print([str(n) for n in ipaddress.summarize_address_range(first, last)])
# → ['10.0.0.0/29', '10.0.0.8/31', '10.0.0.10/32']

See also

Common errors

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