Sometimes, your program would need to work on data that is generated by some other program. Or you have some business report that has been exported to a CSV file and your program now needs to read or write to such CSV files.
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Assertions in Python are like quick “checkpoints”. The program either moves forward from there or terminates.
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In a vast majority of programming languages, a block of codes are executed in the order starting from the first statement and Python programming is not an exception. When a function in a program is executed in Python, it is the same. The first statement is executed first, followed by the next one and so on.
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Comment writing is a good programming practice that can help you, other programmers or testers add clarity to the program. The following are the kinds of comments in Python.
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