Python Safely Navigate a Complex Data Structure: Difference between revisions
Jump to navigation
Jump to search
| Line 10: | Line 10: | ||
first_level_map = yaml.get('first_level_key', {}) # if 'first_level_key' does not exist at all, return {}, but if it exists and has nothing under it, it returns None. | first_level_map = yaml.get('first_level_key', {}) # if 'first_level_key' does not exist at all, return {}, but if it exists and has nothing under it, it returns None. | ||
if first_level_map: | if first_level_map: | ||
second_level_map = first_level_map.get('second_level_key' | second_level_map = first_level_map.get('second_level_key') | ||
if second_level_map: | if second_level_map: | ||
v = second_level_map.get('leaf_key') | v = second_level_map.get('leaf_key') | ||
return v | return v | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Revision as of 00:18, 3 March 2022
Internal
Overview
yaml = ...
v = None
first_level_map = yaml.get('first_level_key', {}) # if 'first_level_key' does not exist at all, return {}, but if it exists and has nothing under it, it returns None.
if first_level_map:
second_level_map = first_level_map.get('second_level_key')
if second_level_map:
v = second_level_map.get('leaf_key')
return v