python how to get iobytes allocated memory length?

Question

This is the code i am using to test the memory allocation

import pycurl
import io


url = \"http://www.stackoverflow.com\"
buf = io.BytesIO()


print(len(bu         


        

Answer 1

You can also use tracemalloc to get indirect information about the size of objects, by wrapping memory events in tracemalloc.get_traced_memory()

Do note that active threads (if any) and side effects of your program will affect the output, but it may also be more representative of the real memory cost if many samples are taken, as shown below.

>>> import tracemalloc
>>> from io import BytesIO
>>> tracemalloc.start()
>>>
>>> memory_traces = []
>>>
>>> with BytesIO() as bytes_fh:
...     # returns (current memory usage, peak memory usage)
        # ..but only since calling .start()
...     memory_traces.append(tracemalloc.get_traced_memory())
...     bytes_fh.write(b'a' * (1024**2))  # create 1MB of 'a'
...     memory_traces.append(tracemalloc.get_traced_memory())
...
1048576
>>> print("used_memory = {}b".format(memory_traces[1][0] - memory_traces[0][0]))
used_memory = 1048870b
>>> 1048870 - 1024**2  # show small overhead
294