Bug: EOFError in running timeseries_forecaster.py

[george-kuanli-peng]

Bug Description

Getting file in timeseries_forecaster.py causes EOFError.

Bug Reproduction

Code for reproducing the bug:

autokeras/docs/py/timeseries_forecaster.py

Lines 20 to 25 in af9168f

	dataset = tf.keras.utils.get_file(
	fname="AirQualityUCI.csv",
	origin="https://archive.ics.uci.edu/ml/machine-learning-databases/00360/"
	"AirQualityUCI.zip",
	extract=True,
	)

Data used by the code:

https://archive.ics.uci.edu/ml/machine-learning-databases/00360/AirQualityUCI.zip

Expected Behavior

The dataset file could be downloaded and extracted successfully.

Setup Details

Include the details about the versions of:

• OS type and version: Ubuntu 20.04
• Python: 3.8
• autokeras: 1.0.19
• keras-tuner: 1.1.2
• scikit-learn: 1.1.1
• numpy: 1.21.2
• pandas: 1.4.1
• tensorflow: 2.9.1

This problem also occurrs in Colab.

Additional context

Colab output:

Downloading data from https://archive.ics.uci.edu/ml/machine-learning-databases/00360/AirQualityUCI.zip
1548288/1543989 [==============================] - 0s 0us/step
1556480/1543989 [==============================] - 0s 0us/step
---------------------------------------------------------------------------
EOFError                                  Traceback (most recent call last)
[<ipython-input-3-72719048ad2d>](https://localhost:8080/#) in <module>()
      3     origin="https://archive.ics.uci.edu/ml/machine-learning-databases/00360/"
      4     "AirQualityUCI.zip",
----> 5     extract=True,
      6 )
      7 

7 frames
[/usr/lib/python3.7/zipfile.py](https://localhost:8080/#) in _read2(self, n)
   1031         self._compress_left -= len(data)
   1032         if not data:
-> 1033             raise EOFError
   1034 
   1035         if self._decrypter is not None:

EOFError:

I could confirm this is not due to incomplete file download. Besides, when I change the fname argument from AirQualityUCI.csv to AirQualityUCI.zip, I could see this zip file and the two extracted files in the Keras cache dir, including AirQualityUCI.csv.