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Add items2dict filter that is the reverse of dict2items (#42071)

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* Add items2dict filter that is the reverse of dict2items

* Address feedback about type checking, and add docs for zip/zip_longest
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Matt Martz 2018-06-29 10:47:07 -05:00 • committed by GitHub
parent d75e49693b
commit aea396f04b
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2 changed files with 84 additions and 16 deletions
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12
lib/ansible/plugins/filter/core.py
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@ -51,6 +51,7 @@ from ansible.errors import AnsibleFilterError
from ansible.module_utils.six import iteritems, string_types, integer_types
from ansible.module_utils.six.moves import reduce, shlex_quote
from ansible.module_utils._text import to_bytes, to_text
from ansible.module_utils.common.collections import is_sequence
from ansible.parsing.ajson import AnsibleJSONEncoder
from ansible.parsing.yaml.dumper import AnsibleDumper
from ansible.utils.hashing import md5s, checksum_s
@ -532,6 +533,16 @@ def dict_to_list_of_dict_key_value_elements(mydict):
return ret
def list_of_dict_key_value_elements_to_dict(mylist, key_name='key', value_name='value'):
''' takes a list of dicts with each having a 'key' and 'value' keys, and transforms the list into a dictionary,
effectively as the reverse of dict2items '''
if not is_sequence(mylist):
raise AnsibleFilterError("items2dict requires a list, got %s instead." % type(mylist))
return dict((item[key_name], item[value_name]) for item in mylist)
def random_mac(value):
''' takes string prefix, and return it completed with random bytes
to get a complete 6 bytes MAC address '''
@ -653,6 +664,7 @@ class FilterModule(object):
'extract': extract,
'flatten': flatten,
'dict2items': dict_to_list_of_dict_key_value_elements,
'items2dict': list_of_dict_key_value_elements_to_dict,
'subelements': subelements,
# Misc