How to change the font of Axis label in Pyqtgraph

I have a custom font, I am able to set this font in title of the graph, I need help in setting the axis label font.(left, bottom axis labels)

I am able to set the font to the title of the graph like this

    graphWidget = pyqtgraph.PlotWidget()
    graph = graphWidget.getPlotItem()
    graph.titleLabel.item.setFont(font)

I would like to know if there's any similar way to set the font for axis labels.

Solution

To set custom QFont to axis label, you have to setFont for label of each axis.

Here is a short example, which changes font family to Times for title, bottom and left axis.

import sys

import pyqtgraph
from PyQt5.QtGui import QFont
from PyQt5.QtWidgets import QApplication

app = QApplication(sys.argv)

# Define your font
my_font = QFont("Times", 10, QFont.Bold)

graphWidget = pyqtgraph.PlotWidget()
graphWidget.setTitle("My plot")

# Set label for both axes
graphWidget.setLabel('bottom', "My x axis label")
graphWidget.setLabel('left', "My y axis label")

# Set your custom font for both axes
graphWidget.getAxis("bottom").label.setFont(my_font)
graphWidget.getAxis("left").label.setFont(my_font)

graph = graphWidget.getPlotItem()
# Set font for plot title
graph.titleLabel.item.setFont(my_font)

graphWidget.show()
app.exec()