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Python syntax and semantics - Wikipedia Python syntax and semantics A snippet of Python code demonstrating binary search The syntax of the Python programming language is the set of rules that defines how a Python program will be written and interpreted (by both the runtime system and by human readers) The Python language has many similarities to Perl, C, and Java
Zen of Python - Wikipedia The Zen of Python output in a terminal The Zen of Python is a collection of 19 "guiding principles" for writing computer programs that influence the design of the Python programming language [1] Python code that aligns with these principles is often referred to as "Pythonic" [2] Software engineer Tim Peters wrote this set of principles and posted it on the Python mailing list in 1999 [3
Semipredicate problem - Wikipedia While the chosen value is an invalid result for this operation, it might be a valid input to followup operations For example in Python str find returns −1 if the substring is not found, [2] but −1 is a valid index (negative indices generally start from the end [3])
Ternary conditional operator - Wikipedia An operator for a conditional expression in Python was approved as Python Enhancement Proposal 308 and was added to the 2 5 release in September 2006 Python's conditional operator differs from the common ?: operator in the order of its operands
Metaclass - Wikipedia In Python, the metaclass - type - controls these details of Car 's behavior They can be overridden by using a different metaclass instead of type The above example contains some redundant code to do with the four attributes make, model, year, and color It is possible to eliminate some of this redundancy using a custom metaclass
Assignment (computer science) - Wikipedia In some programming languages, an assignment statement returns a value, while in others it does not In most expression-oriented programming languages (for example, C), the assignment statement returns the assigned value, allowing such idioms as x = y = a, in which the assignment statement y = a returns the value of a, which is then assigned to x
doctest - Wikipedia doctest is a module included in the Python programming language's standard library that allows the easy generation of tests based on output from the standard Python interpreter shell, cut and pasted into docstrings