Practical Code Shortcuts
1.Dictionary Merge with | Operator (Python 3.9+)
merged = dict1 | dict2
2. Count Down with reversed(range())
for i in reversed(range(10)):
print(i)
3. Concatenate Strings Efficiently
''.join(['Hello', ' ', 'World'])
4. Read a File Line-by-Line Efficiently
with open('file.txt') as f:
for line in f:
print(line)
5. Check the Size of an Object with sys.getsizeof()
import sys
sys.getsizeof(my_object)