162. Managing Memory with gc Module

Snippet 1: Manual Garbage Collection

import gc

# Force garbage collection
gc.collect()

print("Manual garbage collection completed.")

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Snippet 2: Disable Automatic Garbage Collection

import gc

# Disable automatic garbage collection
gc.disable()

# Do some memory-intensive operations here...

print("Automatic garbage collection is disabled.")

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Snippet 3: Enable Automatic Garbage Collection

import gc

# Enable automatic garbage collection
gc.enable()

# Do some memory-intensive operations here...

print("Automatic garbage collection is enabled.")

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Snippet 4: Get Garbage Collector's Thresholds

import gc

# Get current garbage collection thresholds
thresholds = gc.get_threshold()

print(f"Current garbage collection thresholds: {thresholds}")

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Snippet 5: Get Objects Tracked by the Garbage Collector

import gc

# Get all objects tracked by the garbage collector
tracked_objects = gc.get_objects()

print(f"Number of objects currently tracked by the garbage collector: {len(tracked_objects)}")

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Snippet 6: Disable Garbage Collection Temporarily

import gc

# Disable garbage collection temporarily
gc.disable()

# Perform some operations without garbage collection

# Re-enable garbage collection
gc.enable()

print("Garbage collection disabled temporarily and then re-enabled.")

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Snippet 7: Set Garbage Collection Thresholds

import gc

# Set new garbage collection thresholds
gc.set_threshold(700, 10, 10)

print("Garbage collection thresholds set to 700, 10, 10.")

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Snippet 8: Check for Unreachable Objects

import gc

# Create a circular reference
class MyClass:
    def __init__(self):
        self.circular_reference = self

obj = MyClass()

# Collect garbage and check unreachable objects
gc.collect()

# Print unreachable objects
unreachable_objects = gc.garbage
print(f"Unreachable objects: {unreachable_objects}")

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Snippet 9: Force Garbage Collection for Unreferenced Objects

import gc

# Create some objects and delete them
obj1 = object()
obj2 = object()

del obj1
del obj2

# Force garbage collection to clean up unreferenced objects
gc.collect()

print("Garbage collection completed to clean up unreferenced objects.")

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Snippet 10: Track Objects Using gc.set_debug()

import gc

# Enable debugging to track garbage collection activity
gc.set_debug(gc.DEBUG_LEAK)

# Perform some operations that may cause memory leaks

# Disable debugging after use
gc.set_debug(0)

print("Debugging for garbage collection enabled and then disabled.")