Are you a student who has just graduated and is about to sit for placement? Questions related to Python Programming language are the most common during an interview. No one would want to stumble upon the basic questions. So here is a list of 9 common interview questions related to Python. These questions can help one get acquainted with the basic questions for a technical round and help you ace them!
1. What kind of language is Python?
Python is a dynamically typed, interpreted language. It is also referred to as ‘scripting’ languages as the code is not compiled to a binary form. It's also a programming language with multiple paradigms. It is an object-oriented, high-level programming language.
2. Is Python an interpreted language?
Python is primarily an interpreted language rather than a compiled one, albeit compilation is required. Compilation entails converting human-readable code into machine-readable code, often known as Machine Code. A python program is compiled first, and then it is interpreted. While a code is executed in Python, it produces byte code, which is then transformed by the python virtual machine(p.v.m) according to the underlying platform.
3. What is the difference between list and tuple?
There are several differences between list and tuple. One of the most significant distinctions between list and tuple is that the former is mutable, while the latter is not. Second, lists have extra features that tuples don't have. Inserting and removing elements from a list, as well as sorting and removing them, are all examples of these operations. Thirdly, the list contains dynamic properties, whereas the tuple has static ones. Furthermore, iteration implication in a list is time-consuming; nevertheless, iteration implication in Tuple is significantly faster. The list is more convenient for operations like insertion and deletion. Meanwhile, the elements can be accessed using the Tuple data type.
Learn more about the difference below
4. How is memory managed in Python?
Allocating a block of memory in a computer to a program is known as memory allocation. Memory is managed by the Python manager. In Python, memory management entails creating a private heap that contains all Python objects and data structures. Additionally, there is an automatic memory allocation and deallocation process in python called garbage collection for memory management. It's a procedure in which the interpreter clears memory when it's not in use so that it can be used by other objects.
5. What is an identity operator?
Identity operators are used to comparing objects to see if they are the same object with the same memory location, not if they are equal. There are two types of operators: Is and Is Not.
The ‘Is' operator determines if the variables on either side of the operator point to the same object if true and false if otherwise. The ‘Is not' operator evaluates to false if both variables on either side of the operator point to the same object, otherwise to true.
6. What is monkey patching?
Monkey patches are dynamic (or run-time) modifications of a class or module in Python. To put it another way, a class or module behaviour can be altered during runtime. It is a technique for modifying or suppressing a piece of code's default behaviour at runtime without affecting the source code.
7. How to implement variable length arguments in Python?
The single-asterisk form of *args can be passed to functions in Python as a parameter to send a non-keyworded variable-length argument list. A keyworded, variable-length argument list is passed using the specific syntax **kwargs in function declarations. The double star is used with kwargs because it permits keyword arguments to be passed through.
Learn to practically do this in the video below
8. What is a lambda expression?
An anonymous function in Python is defined with the lambda keyword. A lambda expression doesn't have a "return" statement. instead, an expression is always returned. A lambda function can take as many arguments as it wants, but it can only have one expression.
9. What is list comprehension?
List comprehension is a sophisticated method of defining and creating new lists based on current ones. It creates lists in a more compact and faster manner than standard functions and loops. These are used to generate new lists from iterables such as tuples, strings, arrays, and lists. A list comprehension is mainly composed of brackets carrying the expression that is executed for each element, as well as a for loop that iterates over each element.
To learn more about list comprehension, watch the video below
10. What is the use of the split and join function of str?
The split() function can be used to split a string into a list of strings based on a delimiter.
The join() function can be used to combine a list of strings based on a delimiter into a single string. Splitting a person's first and last names is a simple yet powerful example. CSV is still another option (Comma Separated Files). To obtain data from a CSV file, we use split, and to write data to a CSV file, we use join.
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