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#! /bin/env python
#
from __future__ import print_function
import os.path
import scipy.stats
import pyferret.stats
def create_script(scriptname, distribname, distriblongname, funcname, funcreturn):
"""
Creates scriptname from 'stats_template' using remaining arguments
for replacement strings in the template file.
"""
templatefile = file("stats_template", "r")
scriptfile = file(scriptname, "w")
for line in templatefile:
line = line.replace("<distribname>", distribname)
line = line.replace("<distriblongname>", distriblongname)
line = line.replace("<funcname>", funcname)
line = line.replace("<funcreturn>", funcreturn)
print(line, end=" ", file=scriptfile)
templatefile.close()
scriptfile.close()
def create_all_scripts():
"""
Creates the valid stats_<distribname>_<funcname>.py scripts, if they do
not already exist, for all the supported distributions and functions.
"""
# List of supported distributions
distnamelist = pyferret.stats.getdistname(None)
# List of supported functions
funcnamelist = [ ( "cdf", "cumulative density function values", ),
( "isf", "inverse survival function values", ),
( "pdf", "probability distribution function values", ),
( "pmf", "probability mass function values", ),
( "ppf", "percent point function values", ),
( "sf", "survival function values", ),
( "rvs", "random variates", ), ]
# Loop of the list of distributions and functions, creating the script
# if it does not exist and if the function exists for that distribution.
for nametuple in distnamelist:
distname = nametuple[0]
distlongname = nametuple[1]
for (funcname, funcreturn) in funcnamelist:
try:
# Verify the function exists for the distribution.
# This raises an AttributeError is it does not.
statsfunc = eval("scipy.stats.%s.%s" % (distname,funcname))
if distname == "weibull_min":
scriptname = "stats_weibull_%s.py" % funcname
else:
scriptname = "stats_%s_%s.py" % (distname, funcname)
# Verify the script does not already exist.
if not os.path.exists(scriptname):
create_script(scriptname, distname, distlongname,
funcname, funcreturn)
except AttributeError:
# function does not exist for the distribution - skip
pass
if __name__ == "__main__":
# create all scripts from the 'stats_template' file
if not os.path.exists("stats_template"):
raise ValueError("The file 'stats_template' does not exist")
create_all_scripts()
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