21 Python Developer Interview Questions & Answers

by Kurt Johnson

Passing one_true to all() returned False because the list contained one or more falsy values. The first function call returned True because all_true was filled with truthy values. On the other hand, the second print statement prints False because none of the elements are True, i.e., all elements are False. The first print statement prints True because one of the elements in one_truth is True. First, we need to know how to retrieve data from a dictionary to be passed on to this function. This approach uses the if-in statement to check whether or not a given key exists in the dictionary.

python developer interview questions

A ‘break’ terminates the current loop or statement, ‘continue’ moves to the next iteration of the loop, and ‘pass’ is a placeholder for no operation within a statement block. A shallow copy creates a new instance with copied values and how to become a python developer is faster, whereas a deep copy stores values that are already copied and takes longer but is more comprehensive. ‘extend()’ adds elements of an iterable to the end of the list, whereas ‘append()’ adds a single element to the end.

What are global, private, and protected attributes in Python?

Also, the subclass can be used as a parent class for another. App development becomes simpler and easier with Python’s cross-platform flexibility. It is an ideal language for prototyping, which is the major reason developers use this language. Python libraries allow for analysing large data sets quickly, which makes it an efficient language for the Data Science field. The init () method is always declared inside the class and used to initialize the attribute of an object immediately when it is created at that moment. The range() function can return a range object(a type of iterable).

We can select a database, URL structure, templating style, database, etc., with the help of a pyramid. It provides flexibility as it is a heavy configuration program. Duplicate elements can be removed from the list by turning them into the set. Python compiles the .py files and saves them as .pyc files. Pass is a statement in Python that is used as a placeholder for upcoming codes. At execution, it does not show any error, but it is not allowed in loops, class definitions, if statements, or function definitions.

Q45. What is the usage of help() and dir() function in Python?

Tkinter in Python is a library and toolkit for GUI development. Python does not perform compile-time code checking except when the code is syntactically invalid. If the code is following the syntax rules, it will compile without even checking it. It contains a better version of the linear algebra modules with more features. When a nested function defines a value in an enclosing scope, the closure occurs in the program. If there are two methods with the exact same name to perform different tasks and provide different functionality, the concept of overriding is used.

python developer interview questions

Access specifiers (public, protected, and private) determine the visibility of class members. Public members are accessible everywhere, protected members are set within derived classes, and private members are only within the class. Dictionary comprehension is a concise way to create dictionaries from iterable sources. It allows the creation of key-value pairs based on conditions and expressions.

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