Tips, Tricks, and Tidbits

• Known limitations
• Moving beyond a single flat file
• How to fix pyntree installing as UNKNOWN-0.0.0

Known limitations

• Attempting to retrieve a name which is also a Node property will not work as intended (ex: _values) when doing so explicitly (Node._values), but using the get method will yield the desired result. For example, if you have a data point/key with a sub-attribute of _values, running Node._values will work as described here rather than returning that sub-attribute. However, running Node.get('_values') will work as intended.
  In code, this looks like:

x = Node()
x._values = 1
x._values
Output: ['values']
x.get('_values')
Output: <pyntree.Node object at memory_location>

 

Moving beyond a single flat file

For more complex projects, a flat-file database may not be the way to go. Here is one example of how you could store data in a more distributed way:

• db folder
  • users
    • user1.pyn
    • user2.pyn
    • etc
  • transactions
    • 001.pyn
    • 002.pyn
    • etc
  • config.json

Python implementation:

from pyntree import Node
config = Node('db/config.json')

# On request with argument "transaction_id"
data = Node(f'db/transactions/{transaction_id}')
return data()

How to fix pyntree installing as UNKNOWN-0.0.0

pip install --upgrade pip wheel setuptools