Скачать или смотреть Understanding Why Python Isn't Adding Double Quotes to ADB Statements

Discover how to solve the common issue of missing double quotes in ADB commands generated by Python. Learn the correct code structure to ensure proper formatting in your outputs.
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This video is based on the question https://stackoverflow.com/q/64968334/ asked by the user 'hookeh33217' ( https://stackoverflow.com/u/14692104/ ) and on the answer https://stackoverflow.com/a/64968404/ provided by the user 'Amit Nanaware' ( https://stackoverflow.com/u/10727144/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Why is Python Not Adding Double Quotes After All ADB Statements?

When working with Python to generate commands for Android Debug Bridge (ADB), you may encounter an issue where the expected double quotes are not added after each ADB statement. This can cause problems, especially if you're trying to execute multiple commands that require proper formatting. In this guide, we will explore why this happens and provide a clear solution to ensure that your generated statements are correctly formatted.

The Problem

As seen in the given code, when attempting to generate multiple ADB commands from a list of applications, the output does not format correctly. Instead of having double quotes and the redirect > CON at the end of each command, only the last command is formatted accordingly. Here’s a snippet from the problematic output:

[[See Video to Reveal this Text or Code Snippet]]

This discrepancy occurs because of how the print statement is combined with the loop, leading to incorrect formatting of individual commands.

The Solution

To resolve this issue, we need to adjust our approach to generating the commands. Instead of using a while loop, we can leverage a for loop to iterate through each element in the list and format the command string correctly. Here’s the revised code:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of the Solution

Using a for Loop: The for loop iterates directly over each application in the app_list, allowing you to generate each command in one go.

String Formatting: The '%s' % app part of the print statement ensures that each application name is inserted into the command string where %s is placed. This results in commands that look like:

[[See Video to Reveal this Text or Code Snippet]]

Benefits of This Approach

Clarity: Each command is clearly formatted, making it easier to read and debug.

Flexibility: You can easily modify the list of applications without affecting the command structure.

Correctness: The correct command syntax will be generated for each application, which is essential for proper execution.

Conclusion

Generating properly formatted commands in Python, particularly for ADB, is crucial for automation scripts. By following the revised approach above, you ensure that double quotes are included around each command and that the output is structured correctly. Implementing a for loop with string formatting provides a robust solution to this common problem. Happy coding!