1.3.3.8.3. Mixing argparse and ConfigManager in a script

Specification file (misc.config.argparse.ini):

# -*- coding: utf8 -*-

# Global options: General configuration options
var=string(default=TEMP) # Name of the netcdf variable
title=string(default='%(long_name)s [$var]') # Title of the plot

[zoom] # Zoom: zoom extensions in space
    [[lon]]
        min=float(default=-5.5) # Min logitude
        max=float(default=-4) # Max longitude
    [[lat]]
        min=float(default=47) # Min latitude
        max=float(default=49) # Max latitude

Configuration file (misc.config.argparse.cfg):

var=temp

Executable script (misc.config.argparse.py):

#!/bin/env python
"""Sample executable script using config"""

# FORCE COMMANDLINE ARGUMENTS FOR THE EXAMPLE
from vcmq import data_sample, code_file_name
ARGUMENTS = "--var=temp --zoom-lat-min=48 "+data_sample('mars3d.xy.nc')
import sys
sys.argv = sys.argv[:1] + ARGUMENTS.split()

############################################################################
############################################################################
############################################################################

# Init commandline parser
import os
from argparse import ArgumentParser
parser = ArgumentParser(description="Script to plot a 2D netcdf variable")
parser.add_argument('ncfile', help='input netcdf file')

# Configuration
from vacumm.misc.config import cfgargparse
cfg, args = cfgargparse('misc.config.argparse.ini', parser)
print 'Current configuration:', cfg

# Now use it
# - load zoom
lon = (cfg['zoom']['lon']['min'], cfg['zoom']['lon']['max'])
lat = (cfg['zoom']['lat']['min'], cfg['zoom']['lat']['max'])
# - read var
import cdms2
f = cdms2.open(args.ncfile)
var = f(cfg['var'], lon=lon, lat=lat, time=slice(0, 1))
f.close()
# - plot
from vacumm.misc.plot import map2
long_name = var.long_name
map2(var, title=cfg['title']%locals(), savefigs=code_file_name(), show=False,
    close=True)