![]() ![]() The below example code demonstrates how to use the del statement with the gc.collect() method to clear the memory in Python. Therefore, after deleting the variable using the del statement, we can use the gc.collect() method to clear the variable from memory. The del statement removes the variable from the namespace, but it does not necessarily clear it from memory. Output: NameError: name 'a' is not defined In that case, the program will return the NameError exception as the variable we are trying to access no more exists in the variable namespace. Suppose we try to use or access the variable after deleting it. The below example code demonstrates how to use the del statement to delete the variable. We can first delete the variable like some large list, or array, etc., about which we are sure that are no more required by the program. The del statement is used to delete the variable in Python. Clear Memory in Python Using the del StatementĪlong with the gc.collect() method, the del statement can be quite useful to clear memory during Python’s program execution. It can prevent the program from running out of memory and crashing by clearing the memory’s inaccessible data. The gc.collect() method can help decrease memory usage and clear the unreferenced memory during the program execution. The list maintained by the garbage collector is cleared whenever the gc.collect() with default generation value equal to 2 is called. In Python, the short-lived objects are stored in generation 0 and objects with a longer lifetime are stored in generation 1 or 2. It specifies the generation of the objects to collect using the gc.collect() method. The optional argument generation is an integer whose value ranges from 0 to 2. The unreferenced memory is the memory that is inaccessible and can not be used. The gc.collect(generation=2) method is used to clear or release the unreferenced memory in Python. Clear Memory in Python Using the gc.collect() Method We can clear the memory in Python using the following methods. Read more about clearing cache on Mac here. Here’s how to remove cache files: Open Finder > Go > Go to folder Type /Library/Caches and clean the contents of the folders that you find in there (make sure you delete the contents and not the folders) Empty the Bin. To prevent the program from running out of memory, we have to free or clear the memory by clearing the variable or data, which is no more needed in the program. This is why cleaning up caches is a great optimization method. In these types of scenarios, the program can often run out of memory. When a program has to deal with large files, process a large amount of data, or keep the data in the memory. This tutorial will look into the methods to free or clear memory in Python during the program execution. Clear Memory in Python Using the del Statement.Clear Memory in Python Using the gc.collect() Method. ![]()
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