twisted.protocols.amp.Decimal(Argument) class documentationtwisted.protocols.amp
(View In Hierarchy)
Encodes decimal.Decimal instances.
There are several ways in which a decimal value might be encoded.
Special values are encoded as special strings:
 - Positive infinity is encoded as C{"Infinity"}
 - Negative infinity is encoded as C{"-Infinity"}
 - Quiet not-a-number is encoded as either C{"NaN"} or C{"-NaN"}
 - Signalling not-a-number is encoded as either C{"sNaN"} or C{"-sNaN"}
Normal values are encoded using the base ten string representation, using engineering notation to indicate magnitude without precision, and "normal" digits to indicate precision. For example:
 - C{"1"} represents the value I{1} with precision to one place.
 - C{"-1"} represents the value I{-1} with precision to one place.
 - C{"1.0"} represents the value I{1} with precision to two places.
 - C{"10"} represents the value I{10} with precision to two places.
 - C{"1E+2"} represents the value I{10} with precision to one place.
 - C{"1E-1"} represents the value I{0.1} with precision to one place.
 - C{"1.5E+2"} represents the value I{15} with precision to two places.
http://speleotrove.com/decimal/ should be considered the authoritative specification for the format.
| Method | fromString | Convert a string to a Python object. Subclasses must implement this. | 
| Method | toString | Serialize a decimal.Decimalinstance to the specified wire 
format. | 
Inherited from Argument:
| Method | __init__ | Create an Argument. | 
| Method | retrieve | Retrieve the given key from the given dictionary, removing it if found. | 
| Method | fromBox | Populate an 'out' dictionary with mapping names to Python values decoded from an 'in' AmpBox mapping strings to string values. | 
| Method | toBox | Populate an 'out' AmpBox with strings encoded from an 'in' dictionary mapping names to Python values. | 
| Method | fromStringProto | Convert a string to a Python value. | 
| Method | toStringProto | Convert a Python object to a string. | 
Convert a string to a Python object. Subclasses must implement this.
| Parameters | inString | the string to convert. (type: bytes) | 
| Returns | the decoded value from inString | |
Serialize a decimal.Decimal instance to the specified wire 
format.