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Getting Started with Python and Raspberry Pi (Redirected from Learning Python By Developing Raspberry Pi Applications)
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We will first have a look at the ways in which third party code and libraries can be downloaded, installed, and included in the Python scripts and application we write.
As we have already seen in several of the examples used so far, Python libraries (modules) are used in code by importing them using the import statement. However, so far, we have only been importing the entire modules. For example, import threading imports the entire threading module and to use, say, the Thread class, you would have to specify it as threading.Thread.
Python also allows you to import single classes, and even functions, using a slightly modified syntax, as shown next:
from threading import Thread from time import time
This preceding code imports just the Thread class and the time function from the threading and time modules respectively. Now when you want to use either within the rest of the file, you would only need to specify either Thread or time, rather...
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