AttributeError module 'time' has no attribute 'clock'

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

The Python "AttributeError module 'time' has no attribute 'clock'" occurs because since Python v3.8, the clock() function has been removed. To solve the error, use the time.perf_counter() or time.process_time() functions instead.

Here is an example that uses perf_counter().

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import time

start = time.perf_counter()

time.sleep(1)

end = time.perf_counter()

print(end - start)  # 👉️ 1.0010583459988993

The clock() function has been removed in Python 3.8, so we have to use perf_counter or process_time.

Here is an example that uses process_time().

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import time

start = time.process_time()

time.sleep(1)

end = time.process_time()

print(end - start)  # 👉️ 3.2690000000001884e-05

The perf_counter function returns the number of fractional seconds of a performance counter. The function includes time elapsed during sleep.

The process_time function returns the number of fractional seconds of the system and user CPU time of the current process. The function doesn't include time elapsed during sleep.

If you didn't use the time.clock() function but still got the error, then you are using an external module that uses the clock() function and you have to update it or replace it if it isn't maintained anymore.

Most commonly the error is caused by using the unmaintained PyCrypto module or having an older version of sqlalchemy installed.

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# ✅ if you use PyCrypto
pip3 uninstall PyCrypto # 👈️ abandoned project
pip3 install pycryptodome # 👈️ actively maintained fork

# ✅ if you use SQLAlchemy
pip install SQLAlchemy --upgrade # 👈️ upgrade package version

If the error is caused from another external module, try upgrading it with the pip install your_module --upgrade command.

If the module wasn't updated to not use the clock() function, you have to look for a replacement or use a Python version lower than 3.8.

Conclusion #

The Python "AttributeError module 'time' has no attribute 'clock'" occurs because since Python v3.8, the clock() function has been removed. To solve the error, use the time.perf_counter() or time.process_time() functions instead.