title: How to merge two learning rate schedulers in PyTorch?
body: <p>I want to use OneCycleLR for warming up the LR from a low value, then decreasing the LR from peak with ReduceLROnPlateau.</p>
  
  <p>I understand that I could simulate ReduceLROnPlateau manually after increasing LR with OneCycleLR, but is there a simpler way to use these two schedulers together directly?</p>
  
  <p>Thanks in advance.</p>