mprof

• library that needs to be installed
• details on memory usage over time, even plots a nice graph
• memory-profiler

psutil

• library that needs to be installed
• details on running processes, system utilisation (CPU, mem, disk, network, sensors) in Python
• useful for system monitoring, profiling, management of processes, limiting processes
• psutil

tracemalloc

• part of python system library, no need to install
• to find what is hogging the memory or what is leaking by taking snapshots of python memory
• tracemalloc
• Fugue blogpost