Learn Python Coding
Learn Python through simple, practical examples and real coding ideas. Clear explanations, useful snippets, and hands-on learning for anyone starting or improving their programming skills. Admin: @HusseinSheikho || @Hussein_Sheikho
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data = data[-1:] + data[:-1]
But deque.rotate() does this at the level of the data structure and usually works more efficiently for cyclical operations. 🚀
q.rotate(1)A negative value rotates the queue in the other direction. ⬅️
q.rotate(-2)This is useful for ring buffers, task schedulers, cyclical queues, and round-robin algorithms. 🔄
workers.rotate(-1)🔥
deque.rotate() allows you to implement cyclical data structures without manual index logic and without creating new lists. 💡
#Python #Programming #Deque #CodingTips #Tech #DevCommunityd = {"apple": 100, "banana": 200, "cherry": 300}
If there are 1 million keys, this can consume a lot of memory — more than 100 bytes per key.
Our elephant has published a new library that uses about 9 bytes per key. Yes, only 9 bytes. Usage looks like this:
from fastconstmap import ConstMap
d = {"apple": 100, "banana": 200, "cherry": 300}
m = ConstMap(d)
m["apple"] # -> 100
m.get_many(["banana", "cherry"]) # -> [200, 300]
It can be significantly faster (for example, up to 2 times in some cases) than the standard dictionary. It can also be serialized and deserialized to disk or network for convenient reuse.
https://pypi.org/project/fastconstmap/
github: https://github.com/lemire/fastconstmap
👉 @PythonRe𝗜𝗻𝗽𝘂𝘁/𝗢𝘂𝘁𝗽𝘂𝘁 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀
- print()
- input()
- format()
𝗗𝗮𝘁𝗮 𝗧𝘆𝗽𝗲 𝗖𝗼𝗻𝘃𝗲𝗿𝘀𝗶𝗼𝗻 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀
- int()
- float()
- str()
- bool()
- complex()
- list()
- tuple()
- set()
- dict()
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- bytes()
- bytearray()
- memoryview()
𝗠𝗮𝘁𝗵𝗲𝗺𝗮𝘁𝗶𝗰𝗮𝗹 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀
- abs()
- pow()
- round()
- divmod()
- sum()
- min()
- max()
𝗦𝗲𝗾𝘂𝗲𝗻𝗰𝗲 & 𝗖𝗼𝗹𝗹𝗲𝗰𝘁𝗶𝗼𝗻 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀
- len()
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- zip()
- enumerate()
- reversed()
- all()
- any()
𝗧𝘆𝗽𝗲 & 𝗢𝗯𝗷𝗲𝗰𝘁 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀
- type()
- id()
- isinstance()
- issubclass()
𝗙𝗶𝗹𝗲 𝗛𝗮𝗻𝗱𝗹𝗶𝗻𝗴 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀
- open()
- close()
- read()
- write()
- seek()
- tell()
𝗦𝘁𝗿𝗶𝗻𝗴 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀
- ord()
- chr()
- ascii()
- repr()
𝗨𝘁𝗶𝗹𝗶𝘁𝘆 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀
- help()
- dir()
- eval()
- exec()
- hash()
𝗟𝗼𝗴𝗶𝗰𝗮𝗹 & 𝗕𝗼𝗼𝗹𝗲𝗮𝗻 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀
- bin()
- oct()
- hex()
- bool()
𝗠𝗲𝗺𝗼𝗿𝘆 & 𝗢𝗯𝗷𝗲𝗰𝘁 𝗛𝗮𝗻𝗱𝗹𝗶𝗻𝗴 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀
- memoryview()
- object()
- callable()