AttributeError: module 'time' has no attribute 'clock' in Python 3.8

Question

I have written code to generate public and private keys. It works great at Python 3.7 but it fails in Python 3.8. I don't know how it fails in the latest version. Help me with some solutions.

Here's the Code:

from Crypto.PublicKey import RSA


def generate_keys():
    modulus_length = 1024
    key = RSA.generate(modulus_length)
    pub_key = key.publickey()
    private_key = key.exportKey()
    public_key = pub_key.exportKey()
    return private_key, public_key


a = generate_keys()
print(a)

Error in Python 3.8 version:

Traceback (most recent call last):
  File "temp.py", line 18, in <module>
    a = generate_keys()
  File "temp.py", line 8, in generate_keys
    key = RSA.generate(modulus_length)
  File "/home/paulsteven/.local/lib/python3.8/site-packages/Crypto/PublicKey/RSA.py", line 508, in generate
    obj = _RSA.generate_py(bits, rf, progress_func, e)    # TODO: Don't use legacy _RSA module
  File "/home/paulsteven/.local/lib/python3.8/site-packages/Crypto/PublicKey/_RSA.py", line 50, in generate_py
    p = pubkey.getStrongPrime(bits>>1, obj.e, 1e-12, randfunc)
  File "/home/paulsteven/.local/lib/python3.8/site-packages/Crypto/Util/number.py", line 282, in getStrongPrime
    X = getRandomRange (lower_bound, upper_bound, randfunc)
  File "/home/paulsteven/.local/lib/python3.8/site-packages/Crypto/Util/number.py", line 123, in getRandomRange
    value = getRandomInteger(bits, randfunc)
  File "/home/paulsteven/.local/lib/python3.8/site-packages/Crypto/Util/number.py", line 104, in getRandomInteger
    S = randfunc(N>>3)
  File "/home/paulsteven/.local/lib/python3.8/site-packages/Crypto/Random/_UserFriendlyRNG.py", line 202, in read
    return self._singleton.read(bytes)
  File "/home/paulsteven/.local/lib/python3.8/site-packages/Crypto/Random/_UserFriendlyRNG.py", line 178, in read
    return _UserFriendlyRNG.read(self, bytes)
  File "/home/paulsteven/.local/lib/python3.8/site-packages/Crypto/Random/_UserFriendlyRNG.py", line 129, in read
    self._ec.collect()
  File "/home/paulsteven/.local/lib/python3.8/site-packages/Crypto/Random/_UserFriendlyRNG.py", line 77, in collect
    t = time.clock()
AttributeError: module 'time' has no attribute 'clock'

referenced here in the Crytpo lib : https://github.com/dlitz/pycrypto/issues/283 But the ticket seems not to be closed since quite a year. — Fabien Antoine, Jan 09 '20 at 12:52
The error is in line 18 of a 12 line program. Show us the code that produced the error. — ctrl-alt-delor, Jun 08 '22 at 12:18

score 123 · Answer 1 · edited Oct 26 '19 at 08:59

123

From the Python 3.8 doc:

The function time.clock() has been removed, after having been deprecated since Python 3.3: use time.perf_counter() or time.process_time() instead, depending on your requirements, to have well-defined behavior. (Contributed by Matthias Bussonnier in bpo-36895.)

edited Oct 26 '19 at 08:59

DeepSpace

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answered Oct 26 '19 at 08:59

Angus

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score 105 · Answer 2 · answered Jun 22 '20 at 17:23

105

Check if you are using PyCrypto, if yes, uninstall it and install PyCryptodome which is a fork of PyCrypto

PyCrypto is dead as mentioned on project issue page

Since both these libraries can coexist, it could be an issue too

pip3 uninstall PyCrypto
pip3 install -U PyCryptodome

answered Jun 22 '20 at 17:23

Himanshu Sheoran

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use --user instead of -U if you get a permission error – harrydemuth Jul 19 '21 at 10:12
This is also the solution if you have this error when running gsutil rsync. See [this](https://github.com/GoogleCloudPlatform/gsutil/issues/1127) – RunOrVeith Dec 14 '21 at 12:47

xjcl · Answer 3 · 2022-02-18T13:18:03.213

time.clock() was removed in 3.8 because it had platform-dependent behavior:

On Unix, this returns the current processor time (in seconds)

On Windows, this returns wall-clock time (in seconds)

# I ran this test on my dual-boot system as demonstration:
print(time.clock()); time.sleep(10); print(time.clock())
# Linux:    0.0382 --------------------------->  0.0384
# Windows: 26.1224 ---------------------------> 36.1566

So which function to pick instead?

Processor Time: This is how long this specific process spends actively being executed on the CPU. Sleep, waiting for a web request, or time when only other processes are executed will not contribute to this.
- Use time.process_time()
Wall-Clock Time: This refers to how much time has passed "on a clock hanging on the wall", i.e. outside real time.
- Use time.perf_counter()
  - time.time() also measures wall-clock time but can be reset, so you could go back in time
  - time.monotonic() cannot be reset (monotonic = only goes forward) but has lower precision than time.perf_counter()

Thank you for the information. I have installed `chatterbot` and obtained the error message. I will try to downgrade to Python 3.7. — dudung, Feb 26 '23 at 00:11

score 21 · Answer 4 · answered Nov 01 '21 at 21:13

21

Necroposting this ugly monkey patch:

import time
time.clock = time.time

Works as a last resort, but not recommended.

answered Nov 01 '21 at 21:13

fviktor

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Works well for AWS Lambda. Thanks! – ka8725 Feb 02 '22 at 23:17
Wow. Good to know that it is useful. Thanks for letting us know! – fviktor Feb 04 '22 at 15:59
Much better approach than editing the cpython source code, which will fail again when you redeploy/reinstall – xjcl Feb 18 '22 at 13:22
Best , on-go fix – Abhijeet Sinha Jun 01 '22 at 20:19
What about `time.clock = time.process_time` works also, right? – daparic Jul 22 '22 at 07:44

score 19 · Answer 5 · edited Nov 01 '21 at 21:22

19

Reason: time.clock is deprecated

Solution:

Step 1

Just go to your C folder and search site-packages in the search bar. You will see the result like this:

Right click on this result marked as Red, and open file location.
Then look for sqlalchemy/util/compat.py file and open it. And search time.clock using ctrl+f and replace it with time.time

Step 2

Go to your error last line and go to that directory and open that particular file.
search time.clock using ctrl+f and replace it with time.time

edited Nov 01 '21 at 21:22

Tomerikoo

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answered Feb 13 '21 at 02:55

SARIM

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step 2 smoothly worked, easy and fast , thank you :) – 4nkitpatel Dec 20 '21 at 12:58
1

The easiest soln. – Mahmudul Hasan May 16 '22 at 06:10

score 5 · Answer 6 · edited Oct 28 '20 at 16:44

5

Go to the the code C:\Users\Mr\anaconda3\envs\pythonProject2\Lib\site-packages\sqlalchemy\util and select compat.py and search for time.clock in code.

Then replace time.clock with time.time and save it.

edited Oct 28 '20 at 16:44

SHR

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answered Oct 28 '20 at 16:02

SATHVIKA THUMMALA

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Does this apply to OP's situation? Is modifying the code of a library like this really a good idea? – AMC Oct 29 '20 at 00:12
although it may not the right and appropriate answer but that answer worked for me since I had a little experience with python – Flowra Nov 26 '20 at 02:23

score 4 · Answer 7 · answered Mar 04 '20 at 06:33

AttributeError: module 'time' has no attribute 'clock'

It is deprecated as said which means just use the latest versions of libraries that have that module. For example, depending on the dependency you have, Remove and Install

Crypto==1.4.1, or Mako==1.1.2 or SQLAlchemy==1.3.6 //etc

The idea is you don't have to downgrade your python version as this will catch up with you later. Just update the packages to more late ones which are compatible with Python 3.8

score 3 · Answer 8 · answered Oct 26 '19 at 08:58

3

The module you use to generate key call a method that have been depreciated since python 3.3 time.clock().

You could downgrade to python 3.7 or change the source code to replace it. You should open an issue for that as well.

answered Oct 26 '19 at 08:58

Florian Bernard

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Siddhesh Khadapkar · Answer 9 · 2021-04-21T06:08:44.653

3

time.clock is used in many old libraries. Now that time.clock is removed, one must click on the path given in the error. This will navigate you to the line where time.clock is written, and just change it to time.time.

edited Apr 21 '21 at 06:08

answered Apr 20 '21 at 19:03

Siddhesh Khadapkar

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RAHUL SINGH · Answer 10 · 2021-06-18T04:34:59.803

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Open the file and go to the line as pointed in the error message, change the time.clock() line to time.perf_counter(), if it still doesn't work modify it to time.time

edited Jun 18 '21 at 04:34

answered Jun 17 '21 at 17:17

RAHUL SINGH

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score 1 · Answer 11 · answered Dec 06 '20 at 23:46

1

I had the same issue for encrypting a string using AES in my project neehack.com and I fixed it by updating venv/lib/python3.8/site-packages/Crypto/Random/_UserFriendlyRNG.py line 77 to t = time.time() and it is now fixed.

answered Dec 06 '20 at 23:46

MorariJan

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`time.time()` and `time.clock()` are not compatible. You should replace it with `time.perf_counter()` instead which behaves in a more similar way – mousetail Jan 27 '21 at 15:29

score 1 · Answer 12 · answered Jan 23 '22 at 15:10

1

In my case I replace time.clock() with time.time()

answered Jan 23 '22 at 15:10

Zia Khan

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score 0 · Answer 13 · answered Mar 19 '21 at 15:48

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If you have database involved, upgrade it.

pip install --upgrade flask_sqlalchemy

answered Mar 19 '21 at 15:48

Jefferson Sankara

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score 0 · Answer 14 · answered Oct 26 '21 at 15:04

0

Just open File "/home/paulsteven/.local/lib/python3.8/site-packages/Crypto/Random/_UserFriendlyRNG.py", line 77

and change from

 t = time.clock()

to

 t = time.time

answered Oct 26 '21 at 15:04

Long Lê Hoàng

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score 0 · Answer 15 · answered Dec 08 '21 at 09:05

0

Open file that debug error line. And change t = time.clock() to t = time.time

answered Dec 08 '21 at 09:05

Kairat Koibagarov

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score 0 · Answer 16 · answered Jun 08 '22 at 12:15

0

testing on python3.6 env :

>>> print("%s %s" % (time.process_time(), time.clock()))
>>> 0.288050639 0.288056

that mean process_time is what the lib require.

answered Jun 08 '22 at 12:15

firebird631

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AttributeError: module 'time' has no attribute 'clock' in Python 3.8

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