Context managers handle setup and cleanup automatically.
class FileManager:
def __init__(self, filename, mode):
self.filename = filename
self.mode = mode
def __enter__(self):
self.file = open(self.filename, self.mode)
return self.file
def __exit__(self, exc_type, exc_val, exc_tb):
self.file.close()
with FileManager('test.txt', 'w') as f:
f.write('Hello!')Complete guide to Python decorators covering function decorators, class decorators, decorators with arguments, preserving metadata, and real-world use cases.
Deep dive into Python generators and iterators for memory-efficient data processing, including generator expressions, yield statements, and iterator protocol.
Learn Python decorators including function decorators, class decorators, decorators with arguments, preserving metadata, and practical use cases.