我最终从RawConfigParser
该类继承来实现此功能。如果其他人对此感兴趣,这是我正在使用的代码:
import configparser
class ConfigParserMultiOpt(configparser.RawConfigParser):
"""ConfigParser allowing duplicate keys. Values are stored in a list"""
def __init__(self):
configparser.RawConfigParser.__init__(self, empty_lines_in_values=False, strict=False)
def _read(self, fp, fpname):
"""Parse a sectioned configuration file.
Each section in a configuration file contains a header, indicated by
a name in square brackets (`[]'), plus key/value options, indicated by
`name' and `value' delimited with a specific substring (`=' or `:' by
default).
Values can span multiple lines, as long as they are indented deeper
than the first line of the value. Depending on the parser's mode, blank
lines may be treated as parts of multiline values or ignored.
Configuration files may include comments, prefixed by specific
characters (`#' and `;' by default). Comments may appear on their own
in an otherwise empty line or may be entered in lines holding values or
section names.
"""
elements_added = set()
cursect = None # None, or a dictionary
sectname = None
optname = None
lineno = 0
indent_level = 0
e = None # None, or an exception
for lineno, line in enumerate(fp, start=1):
comment_start = None
# strip inline comments
for prefix in self._inline_comment_prefixes:
index = line.find(prefix)
if index == 0 or (index > 0 and line[index-1].isspace()):
comment_start = index
break
# strip full line comments
for prefix in self._comment_prefixes:
if line.strip().startswith(prefix):
comment_start = 0
break
value = line[:comment_start].strip()
if not value:
if self._empty_lines_in_values:
# add empty line to the value, but only if there was no
# comment on the line
if (comment_start is None and
cursect is not None and
optname and
cursect[optname] is not None):
cursect[optname].append('') # newlines added at join
else:
# empty line marks end of value
indent_level = sys.maxsize
continue
# continuation line?
first_nonspace = self.NONSPACECRE.search(line)
cur_indent_level = first_nonspace.start() if first_nonspace else 0
if (cursect is not None and optname and
cur_indent_level > indent_level):
cursect[optname].append(value)
# a section header or option header?
else:
indent_level = cur_indent_level
# is it a section header?
mo = self.SECTCRE.match(value)
if mo:
sectname = mo.group('header')
if sectname in self._sections:
if self._strict and sectname in elements_added:
raise DuplicateSectionError(sectname, fpname,
lineno)
cursect = self._sections[sectname]
elements_added.add(sectname)
elif sectname == self.default_section:
cursect = self._defaults
else:
cursect = self._dict()
self._sections[sectname] = cursect
self._proxies[sectname] = configparser.SectionProxy(self, sectname)
elements_added.add(sectname)
# So sections can't start with a continuation line
optname = None
# no section header in the file?
elif cursect is None:
raise MissingSectionHeaderError(fpname, lineno, line)
# an option line?
else:
mo = self._optcre.match(value)
if mo:
optname, vi, optval = mo.group('option', 'vi', 'value')
if not optname:
e = self._handle_error(e, fpname, lineno, line)
optname = self.optionxform(optname.rstrip())
if (self._strict and
(sectname, optname) in elements_added):
raise configparser.DuplicateOptionError(sectname, optname, fpname, lineno)
elements_added.add((sectname, optname))
# This check is fine because the OPTCRE cannot
# match if it would set optval to None
if optval is not None:
optval = optval.strip()
# Check if this optname already exists
if (optname in cursect) and (cursect[optname] is not None):
# If it does, convert it to a tuple if it isn't already one
if not isinstance(cursect[optname], tuple):
cursect[optname] = tuple(cursect[optname])
cursect[optname] = cursect[optname] + tuple([optval])
else:
cursect[optname] = [optval]
else:
# valueless option handling
cursect[optname] = None
else:
# a non-fatal parsing error occurred. set up the
# exception but keep going. the exception will be
# raised at the end of the file and will contain a
# list of all bogus lines
e = self._handle_error(e, fpname, lineno, line)
# if any parsing errors occurred, raise an exception
if e:
raise e
self._join_multiline_values()
该_read
函数是从 复制粘贴的configparser.py
。我所做的唯一更改是在行if
后添加条件optval = optval.strip()
。ConfigParserMultiOpt
将为 a 中的一个部分中的重复键返回多个值tuple
。
我是 Python 的新手,所以如果有人对改进上面的代码有任何建议,我会全力以赴!