XGBOOST how to Select the Leaf Node Data

Question

When we plot a XGBOOST tree, we could see the Leafs/Nodes using ,

!pip install --upgrade pip
!pip install graphviz
!sudo apt -y install graphviz

from xgboost import XGBRegressor
from matplotlib import pyplot as plt
from xgboost import plot_tree

xgb =XGBRegressor()
xgb.fit(df,Y)
plt.rcParams["figure.figsize"] = (400, 100)
plot_tree(xgb)
plt.show()

Can we have a Programatic way to select the Data for definition of leaf or node ?

Eg: For the given Tree, Eg: For the given Tree, we could have the left most node we can have the

Leaf Node Sub Data Frame as

 subDf = df[df[6]<1.679][df[4]<761][df[6]<2.651]

Can we Generate this Rule as ( #PSeudo Code ) `

for node is XgbModel:
     nodeVariable = node.variavle
     nodeMaxValue = node.maxVal
     # leftRule = nodeVariable > nodeMaxValue 
     # Rules.Append(leftRule)
     # Rules.Append(getRules(node.Left))

`