subrange 1.0

Subrange data type

This package defines two classes:

• subrange – continuous subrange of integers as a min..max object

• subrangef – annotated subrange with reach formatting capabilities

If you are new to this package, start with the subrange. It implements the core features of subranges:

from subrange import subrange

r = subrange(1, 5)          # subrange of integers 1..5

print r                     # 1..5
print r.min, r.max          # 1 5
print repr(r)               # subrange(1, 5)
print "{:04b}".format(r)    # 0001..0101
print 4 in r                # True
print [i for i in r]        # [1, 2, 3, 4, 5]
print r < 6                 # True

If you need annotated subranges with reach formatting, consider using subrangef:

from subrange import subrangef

f = subrangef(0, 127,
              str_spec="0x{value:02X} {id!r}",  # format string
              id="ASCII_CHARSET",               # annotation
              brief="ASCII character codes")    # annotation

print f     # 0x00..7F 'ASCII_CHARSET'

print "{brief}: {min} to {max}".format(**f.__dict__)
# ASCII character codes: 0 to 127

Subrange instances are immutable hashable ordered collections of unique integers in the range from min to max inclusively.

Annotated subranges are initialized with custom set of attributes (those are id and brief in the example above, but it may be almost arbitrary set of attributes) and a format string str_spec that defines the default formatting of the created instance.

Much more detailed description with examples may be found in documentation to subrange and subrangef classes.