# popular non-standard library libraries 
flask
numpy
django
# popular 70 libraries from the standard library
argparse
array
ast
asyncio
base64
bisect
builtins
calendar
collections
configparser
contextlib
copy
csv
ctypes
datetime
decimal
difflib
dis
email
enum
fileinput
fnmatch
functools
gc
getopt
getpass
hashlib
heapq
http
inspect
io
itertools
json
logging
math
multiprocessing
operator
os
pathlib
pickle
pprint
queue
random
re
select
shutil
signal
socket
sqlite3
string
subprocess
sys
tempfile
threading
time
tkinter
traceback
typing
unittest
urllib
warnings
xml
xml.dom
xml.etree.ElementTree
xml.parsers.expat
xml.sax
xmlrpc
xmlrpc.client
xmlrpc.server
zipfile