Context manager that returns a value

---

examples/advanced/my_tempdir.py

from contextlib import contextmanager

import time
import random
import os
import shutil


@contextmanager
def my_tempdir():
    print("start return")
    tmpdir = '/tmp/' + str(time.time()) + str(random.random())
    os.mkdir(tmpdir)
    try:
        yield tmpdir
    finally:
        shutil.rmtree(tmpdir)
        print("end return")

examples/advanced/use_my_tempdir.py

import os
from my_tempdir import my_tempdir

with my_tempdir() as tmp_dir:
    print(f"In return context with {tmp_dir}")
    with open(tmp_dir + '/data.txt', 'w') as fh:
        fh.write("hello")
    print(os.listdir(tmp_dir))

print('')
print(tmp_dir)
print(os.path.exists(tmp_dir))

start return
In return context with /tmp/1578211890.49409370.6063140788762365
['data.txt']
end return

/tmp/1578211890.49409370.6063140788762365
False