There is one instance for each circle-year.
These two fields are the composite key used to relate a circle-year to a circle.
The year number as a string of three digits with
left zero fill, e.g., “
008”. See Section 3.3, “Year number”.
The year key for this circle-year, left-justified and
blank-filled to length 5. S see the discussion of the
year_key attribute in Section 4.1.7, “Attributes of the
efforts table”. Example values (where
_ represents a space):
0001_ 0027_ 0027b NMZU_
Date as a
Number of observers as an
All these hour- and mile-based quantities use
decimal.Decimal type, with
a precision of one digit after the decimal point.
Note that quantities in this type can be formatted
using a “
as in this conversational example.
>>> d1=decimal.Decimal('1.4') >>> d2=decimal.Decimal('3.47') >>> d3=d1+d2 >>> d3 Decimal('4.87') >>> "%6.1f" % d3 ' 4.9' >>> "%6.3f" % d3 ' 4.870'
Circle instance for to this
An iterator that produces all the
Census instances for this circle-year.