Python

Nonlocal Variables Python 3.x Version ≥ 3.0Python 3 added a new keyword called nonlocal. The nonlocal keyword adds a scope override to the inner scope. You can read all about …

Python operators have a set order of precedence, which determines what operators are evaluated first in apotentially ambiguous expression. For instance, in the expression 3 * 2 + 7, first …

‘and’ and ‘or’ are not guaranteed to return a boolean When you use or, it will either return the first value in the expression if it’s true, else it will …

Bitwise operations alter binary strings at the bit level. These operations are incredibly basic and are directly supported by the processor. These few operations are necessary in working with device …

Python does common mathematical operators on its own, including integer and float division, multiplication, exponentiation, addition, and subtraction. The math module (included in all standard Python versions) offers expanded functionality …

Operations on sets with other sets # Intersection {1, 2, 3, 4, 5}.intersection({3, 4, 5, 6}) # {3, 4, 5} {1, 2, 3, 4, 5} & {3, 4, 5, 6} …

Creating an enum (Python 2.4 through 3.3) Enums have been backported from Python 3.4 to Python 2.4 through Python 3.3. You can get this the enum34 backport from PyPI. pip …

Time between two date-times from datetime import datetime a = datetime(2016,10,06,0,0,0) b = datetime(2016,10,01,23,59,59) a-b # datetime.timedelta(4, 1) (a-b).days # 4 (a-b).total_seconds() # 518399.0 Outputting datetime object to string Uses …

Parsing a string into a timezone aware datetime object Python 3.2+ has support for %z format when parsing a string into a datetime object. UTC offset in the form +HHMM or -HHMM …

Simple example For Python, Guido van Rossum based the grouping of statements on indentation. The reasons for this are explained in the first section of the “Design and History Python …