Distribution_phases.py

# https://www.w3resource.com/graphics/matplotlib/piechart/matplotlib-piechart-exercise-2.php
data = df_metadata_train['phase'].value_counts()
labels = ['Phase 0', 'Phase 1', 'Phase 3']
#colors = ["#1f77b4", "#ff7f0e", "#2ca02c"]
title = 'Count of signals distributed by phase'
plt.pie(data, labels=labels, shadow=True, startangle=90,autopct='%.1f%%')
plt.title(title, bbox={'facecolor':'0.8', 'pad':5})
plt.show()

ok