crudini --set [OPTION]...   config_file section   [param] [value]
crudini --get [OPTION]...   config_file [section] [param]
crudini --del [OPTION]...   config_file section   [param] [list value]
crudini --merge [OPTION]... config_file [section]

SECTION can be empty ("") or "DEFAULT" in which case,
params not in a section, i.e. global parameters are operated on.
If 'DEFAULT' is used with --set, an explicit [DEFAULT] section is added.

  --existing[=WHAT]  For --set, --del and --merge, fail if item is missing,
                       where WHAT is 'file', 'section', or 'param',
                       or if WHAT not specified; all specified items.
  --format=FMT       For --get, select the output FMT.
                       Formats are 'sh','ini','lines'
  --ini-options=OPT  Set options for handling ini files.  Options are:
                       'nospace': use format name=value not name = value
  --inplace          Lock and write files in place.
                       This is not atomic but has less restrictions
                       than the default replacement method.
  --list             For --set and --del, update a list (set) of values
  --list-sep=STR     Delimit list values with "STR" instead of " ,".
                       An empty STR means any whitespace is a delimiter.
  --output=FILE      Write output to FILE instead. '-' means stdout
  --verbose          Indicate on stderr if changes were made
  --help             Write this help to stdout
  --version          Write version to stdout

# Add/Update a var
  crudini --set config_file section parameter value

# Add/Update a var in the root or global area.
# I.e. that's not under a [section].
  crudini --set config_file "" parameter value

# Update an existing var
  crudini --set --existing config_file section parameter value

# Add/Append a value to a comma separated list
# Note any whitespace around commas is ignored
  crudini --set --list config_file section parameter a_value

# Add/Append a value to a whitespace separated list
# Note multiline lists are supported (as newline is whitespace)
  crudini --set --list --list-sep= config_file section parameter a_value

# Delete a var
  crudini --del config_file section parameter

# Delete a section
  crudini --del config_file section

# output a value
  crudini --get config_file section parameter

# output a global value not in a section
  crudini --get config_file "" parameter

# output a section
  crudini --get config_file section

# output a section, parseable by shell
  eval "$(crudini --get --format=sh config_file section)"

# update an ini file from shell variable(s)
  echo name="$name" | crudini --merge config_file section

# merge an ini file from another ini
  crudini --merge config_file < another.ini

# compare two ini files using standard UNIX text processing
  diff <(crudini --get --format=lines file1.ini|sort) \
       <(crudini --get --format=lines file2.ini|sort)

# Rewrite ini file to use name=value format rather than name = value
  crudini --ini-options=nospace --set config_file ""

# Add/Update a var, ensuring complete file in name=value format
  crudini --ini-options=nospace --set config_file section parameter value

pip install iniparse

py crudini.py --help