How to include labels in sns heatmap
I got your problem like this way:
You want to show labels on x and y axis on seaborn heatmap. So for that sns.heatmap() function has two parameter they are xticklabels for x-axis and yticklabels for y-axis labels.

follow below code snippet

import seaborn as sns # for data visualization
flight = sns.load_dataset('flights') # load flights datset from GitHub seaborn repository

# reshape flights dataeset in proper format to create seaborn heatmap
flights_df = flight.pivot('month', 'year', 'passengers') 

sns.heatmap(flights_df)# create seaborn heatmap


Output >>>


Now, we are changing x and y axis labels using  xticklabels and yticklabels sns.heatmap() parameters.

x_axis_labels = [1,2,3,4,5,6,7,8,9,10,11,12] # labels for x-axis
y_axis_labels = [11,22,33,44,55,66,77,88,99,101,111,121] # labels for y-axis

# create seabvorn heatmap with required labels
sns.heatmap(flights_df, xticklabels=x_axis_labels, yticklabels=y_axis_labels)


Output >>>


for in depth explanation follow seaborn heatmap tutorial.