import random import os from tempfile import NamedTemporaryFile import matplotlib.pyplot as plt from PIL import Image plt.hist([random.random() for _ in range(100)]) with NamedTemporaryFile("r+b", delete=True) as fd: # delete is by default True # the if you don't set it, it will delete the file # after leaving the with block plt.savefig(fd) # seeking back to position 0 # allowed by r+ fd.seek(0) # show the image from temporary file with PILLOW Image.open(fd).show() # Image is shown (window opens) # but then directly the block is left and the NamedTemporaryFile is deleted print(fd.name, end=" ") if os.path.exists(fd.name): print("still exists.") else: print("was deleted.")You should read the documentation of
NamedTemporaryFile.
Edit: plt.savefig first argument could be a str or path-like object or a file-like object.
fname : str or path-like or binary file-like A path, or a Python file-like object, or possibly some backend-dependent object such as `matplotlib.backends.backend_pdf.PdfPages`.
This allows also the use of FakeFiles like io.BytesIO.
import random import io import matplotlib.pyplot as plt from PIL import Image plt.hist([random.random() for _ in range(100)]) file_like = io.BytesIO() plt.savefig(file_like) file_like.seek(0) Image.open(file_like).show()
