def errdp(marker, number):
marker = stypes.stringToCharP(marker)<EOL>number = ctypes.c_double(number)<EOL>libspice.errdp_c(marker, number)<EOL>
Substitute a double precision number for the first occurrence of
a marker found in the current long error message.

http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/errdp_c.html

:param marker: A substring of the error message to be replaced.
:type marker: str
:param number: The d.p. number to substitute for marker.
:type number: float