Differences

This shows you the differences between two versions of the page.

--- pymarc [12/05/2009 10:16]
fernando creada (movida desde namespace notas)
+++ pymarc [19/08/2009 00:00]
@@ Line 1: / Line 1: @@
-====== pymarc ======
-pymarc 2.0 / read, write and modify MARC bibliographic data
-Web: http://pypi.python.org/pypi/pymarc/2.0
-Code: http://fruct.us/bzr/pymarc/
-**PACKAGE CONTENTS**
-  * constants
-  * exceptions
-  * field
-  * marc8
-  * marc8_mapping
-  * marcxml
-  * reader
-  * record
-  * writer
-===== record =====
-  class Record(object):
-    A class for representing a MARC record. Each Record object is made up of
-    multiple Field objects. You'll probably want to look at the docs for Field
-    to see how to fully use a Record object.
-    Basic usage:
-        field = Field(
-            tag = '245',
-            indicators = ['0','1'],
-            subfields = [
-                'a', 'The pragmatic programmer : ',
-                'b', 'from journeyman to master /',
-                'c', 'Andrew Hunt, David Thomas.',
-            ])
-        record.add_field(field)
-    Or creating a record from a chunk of MARC in transmission format:
-        record = Record(data=chunk)
-    Or getting a record as serialized MARC21.
-        raw = record.as_marc21()
-    You'll normally want to use a MARCReader object to iterate through
-    MARC records in a file.
-==== Methods ====
-    def __init__(self, data=''):
-      Si len(data) > 0 llama a self.decode_marc(data)
-    def __str__(self):
-        In a string context a Record object will return a prettified version
-        of the record in MARCMaker format. See the docstring for Field.__str__
-        for more information.
-    def __getitem__(self, tag):
-        Allows a shorthand lookup by tag:
-            record['245']
-    def __iter__(self):
-       Usado para iterar sobre los campos; ver next()
-    def next(self):
-       Usado para iterar sobre los campos
-    def add_field(self, *fields):
-        add_field() will add pymarc.Field objects to a Record object.
-        Optionally you can pass in multiple fields.
-    def get_fields(self, *args):
-        When passed a tag ('245'), get_fields() will return a list of all the
-        fields in a record with a given tag.
-            title = record.get_fields('245')
-        If no fields with the specified
-        tag are found then an empty list is returned. If you are interested
-        in more than one tag you can pass in a list:
-            subjects = record.get_fields('600', '610', '650')
-        If no tag is passed in to fields() a list of all the fields will be
-        returned.
-    def decode_marc(self, marc):
-        decode_marc() accepts a MARC record in transmission format as a
-        a string argument, and will populate the object based on the data
-        found. The Record constructor actually uses decode_marc() behind
-        the scenes when you pass in a chunk of MARC data to it.
-    def as_marc21(self):
-        returns the record serialized as MARC21
-Estos métodos devuelven campos específicos:
-    def title(self):
-    def isbn(self):
-    def author(self):
-    ...
-===== field =====
-  class Field(object):
-    Field() pass in the field tag, indicators and subfields for the tag.
-        field = Field(
-            tag = '245',
-            indicators = ['0','1'],
-            subfields = [                               NOTE: positions 0, 2, 4, ... are codes; 1, 3, 5, ... are values
-                'a', 'The pragmatic programmer : ',
-                'b', 'from journeyman to master /',
-                'c', 'Andrew Hunt, David Thomas.',
-            ]
-    If you want to create a control field, don't pass in the indicators
-    and use a data parameter rather than a subfields parameter:
-        field = Field(tag='001', data='fol05731351')
-==== Methods ====
-    def __init__(self, tag, indicators=None, subfields=None, data=''):
-      data se usa sólo para campos de control (tag < 010)
-    def __iter__(self):
-      usado para iterar sobre los subcampos (ver next())
-      Devuelve: self
-    def __str__(self):
-        A Field object in a string context will return the tag, indicators
-        and subfield as a string. This follows MARCMaker format; see [1]
-        and [2] for further reference. Special character mnemonic strings
-        have yet to be implemented (see [3]), so be forewarned. Note also
-        for complete MARCMaker compatibility, you will need to change your
-        newlines to DOS format ('\r\n').
-        [1] http://www.loc.gov/marc/makrbrkr.html#mechanics
-        [2] http://search.cpan.org/~eijabb/MARC-File-MARCMaker/
-        [3] http://www.loc.gov/marc/mnemonics.html
-        Devuelve: string
-    def __getitem__(self, subfield):
-        Retrieve the first subfield with a given subfield code in a field:
-            field['a']
-        Handy for quick lookups.
-    def next(self):
-      usado para iterar sobre los subcampos
-    def value(self):
-        Returns the field as a string without tag, indicators, and
-        subfield indicators.
-    def get_subfields(self, *codes):
-        get_subfields() accepts one or more subfield codes and returns
-        a list of subfield values.  The order of the subfield values
-        in the list will be the order that they appear in the field.
-            print field.get_subfields('a')
-            print field.get_subfields('a', 'b', 'z')
-        Devuelve: None o lista de valores, e.g. ['Pérez, Juan,', '1954-']
-    def add_subfield(self, code, value):
-        Adds a subfield code/value pair to the field.
-            field.add_subfield('u', 'http://www.loc.gov')
-        Devuelve: nada
-    def is_control_field(self):
-        returns true or false if the field is considered a control field.
-        Control fields lack indicators and subfields.
-        Devuelve: boolean
-    def as_marc21(self):
-        used during conversion of a field to raw marc
-        Devuelve: string
-    def format_field(self):
-        Returns the field as a string without tag, indicators, and
-        subfield indicators. Like pymarc.Field.value(), but prettier
-        (adds spaces, formats subject headings).
-        Devuelve: string
-    def is_subject_field(self):
-        Returns True or False if the field is considered a subject
-        field.  Used by format_field.
-        Devuelve: boolean
-{{tag>python marc}}

CatalisWiki

User Tools

Site Tools

Differences

Page Tools