Jerry Zhao

How To Use Python Urllib Module To Get Web Page Html Data Example

Python’s built-in urllib library is used to obtain HTML information of web pages. The urllib library is a standard library module of Python and does not need to be installed separately. It is a common module of Python crawlers. This article will show you how to use the Python urllib library to get Html web …

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How To Fix The Error waiting for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 13083 (unattended-upgr)

Recently, I run the command $ sudo apt update in my Ubuntu virtual machine, it runs successfully. But after that, when I run the command $ sudo apt upgrade, it show me the warning message Waiting for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 12827 (unattended-upgr). This article will tell …

How To Fix The Error waiting for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 13083 (unattended-upgr) Read More »

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