Interview Questions on Python

Interview Questions on Python Interview Questions on Python | Recruiters Frequently Ask11 min read Read ­ing Time: 8 min ­utesBefore going for a F2F round, that is, inter ­view, a can ­di ­date must be aware of what Python is. Apart from hav ­ing prac ­ti ­cal knowl ­edge, the ­o ­ret ­i ­cal knowl ­edge is also nec ­es ­sary to crack an inter ­view. The fol ­low ­ing inter ­view ques ­tions on Python are meant to give you an overview of what python inter ­view is like. Python is a gen ­er ­al pur ­pose pro ­gram ­ming lan ­guage with inte ­grat ­ed dynam ­ic seman ­tics. On com ­par ­ing Python to oth ­er pro ­gram ­ming lan ­guages, Python is a lit ­tle sim ­ple. This pro ­gram ­ming lan ­guage is not that com ­plex as it uses a unique syn ­tax that trig ­gers on the read ­abil ­i ­ty. The codes used in python are much eas ­i ­er than any oth ­er pro ­gram ­ming lan ­guage. Not only this, devel ­op ­ers can eas ­i ­ly read and trans ­late the codes. This ulti ­mate ­ly reduce the cost of main ­te ­nance of the pro ­gram and devel ­op ­ment of it. There is an urgent need to have ful ­ly-fledged knowl ­edge of Python before appear ­ing for an inter ­view. Python inter ­view ques ­tions and answers are here to help you have a full prepa ­ra ­tion. Read thor ­ough ­ly to enhance your chances of get ­ting select ­ed in the inter ­view process. Python Inter ­view ques ­tions for fresh ­ers are set up in a way. It helps the recruiter to fig ­ure out whether the can ­di ­date is eli ­gi ­ble enough for the job or not. Devel ­op ­ers, before apply ­ing for python job, should be aware that they have prop ­er knowl ­edge of the python lan ­guage. So that they could crack Python Inter ­view Ques ­tions after being ful ­ly pre ­pared.Here are some Python Inter ­view ques ­tions and answers that could be asked while hav ­ing a round of ques ­tions. Python Inter ­view Ques ­tions should deal with the cod ­ing and usage of the pro ­gram ­ming lan ­guage. Python Interview Questions And Answers Question 1. Could you tell me some of the salient features of Python? Python Inter ­view Ques ­tions for fresh ­er are expect ­ed to be more basic yet you must know the ques ­tions. No mat ­ter how sim ­ple or com ­plex the ques ­tion is, you have to keep your chin up. And answer the asked ques ­tion with full con ­fi ­dence. Python Inter ­view ques ­tions and answers may be dif ­fi ­cult. The exam ­in ­er is going to judge your knowl ­edge and for that, you need to answer the ques ­tions that are basic. Below is the answer to the ques ­tion. First, you need to tell the recruiter that you are going to talk about the fea ­tures of the python inter ­view ques ­tion. Start by telling that python sup ­ports struc ­tur ­al and func ­tion ­al pro ­gram ­ming meth ­ods. Start inform ­ing recruiters that Python Lan ­guage was used as a script ­ing lan ­guage. Lat ­er it com ­piles with Byte Code so that the cre ­ation of the large appli ­ca ­tion could be done. It also has the poten ­tial to pro ­vide high-lev ­el dynam ­ic data types. It sup ­ports Dynam ­ic Type Check ­ing and Auto ­mat ­ic garbage col ­lec ­tion. With that, it is eas ­i ­ly present in the inte ­grat ­ing process with C, C++, Java, CORBA, ActiveX, and COM. Question 2.Name the type of data that Python supports. This one is the per ­fect python inter ­view ques ­tion to be asked. Devel ­op ­ers should know the names of the data types on which the whole python runs. Python inter ­view ques ­tions and answers include this very ques ­tion. It would be asked by the recruiter on hav ­ing ver ­bal com ­mu ­ni ­ca ­tion in the inter ­view. You need to make sure that you are aware of the types. The Python inter ­view ques ­tions for fresh ­ers have to be basic but also use ­ful. To answer this ques ­tion, you need to give an exact num ­ber of the data types present in python. You could start your answer by say ­ing that there are 5 data types in python that are stan ­dard. The first is the “Num ­ber” data type. [You could elab ­o ­rate a lit ­tle on this answer as well. So that the recruiter could know that you have the knowl ­edge and you pre ­pared your ­self for Python Inter ­view ques ­tions] The sec ­ond type is the “String” data type and the third is the “list” data type. The fourth being the “Tuple” data type and the last one is the “Dic ­tio ­nary” data type. Question 3. Kindly elaborate “inheritance in Python”. Being a Python devel ­op ­er, Python Inter ­view ques ­tions for fresh ­er must include this ques ­tion. To answer this ques ­tion you should start polite ­ly and tell the inter ­view ­er that Python is an object ori ­ent ­ed pro ­gram ­ming par ­a ­digm. The design of Python class ­es is in a way that they could inher ­it the prop ­er ­ties of oth ­er class ­es as well. Super ­class is the class that is being inher ­it ­ed and the class that inher ­its the super ­class is a derived or child class. Fur ­ther clas ­si ­fi ­ca ­tion of inher ­i ­tances starts with the sin ­gle inher ­i ­tance that inher ­its only one super ­class. Sec ­ond is Mul ­ti ­ple Inher ­i ­tance that includes mul ­ti ­ple super ­class ­es. The last one is a Mul ­ti ­level Inher ­i ­tance. You need to know every sin ­gle detail about the Python Inter ­view ques ­tions and answers that could be asked. Because these types of ques ­tions have high chances. Question 4. What is pickling and unpickling in Python? Start your answer by defin ­ing the giv ­en terms. Tell the inter ­view ­er that both the giv ­en terms are actu ­al ­ly process ­es of the oper ­a ­tors in python. Pick ­ling is a pro ­ce ­dure of con ­vert ­ing Python objects into a char ­ac ­ter stream. The mod ­ule assists in the process of “pick ­le” there ­fore the name of the pro ­ce ­dure is pick ­ling. As the name sug ­gests, unpick ­ling is the process of retriev ­ing the authen ­tic Python objects from the string rep ­re ­sen ­ta ­tion. This process is a reverse of the Pick ­ling process. Question 5. What is the role of file related modules in Python? Could you give some names of file related modules in Python? You need to make sure that you are aware of the fact that Python con ­sists of some file relat ­ed mod ­ules. These mod ­ules fur ­ther have a role in han ­dling text files and bina ­ry files in a sys ­tem. The mod ­ules help in cre ­at ­ing text or bina ­ry files, con ­tent updates, delete, copy and oth ­ers. The answer to the sec ­ond ques ­tion should, there ­fore, start some ­thing like what is men ­tioned ahead. To name a few file relat ­ed mod ­ules are the os.path os, os.path, and shuttle.os. Shut ­tle. os mod ­ule helps in copy ­ing or delet ­ing files while anoth ­er mod ­ule has a built in func ­tion to access the file sys ­tem. Question 6. What is an indentation in Python? Start your answer by telling that inden ­ta ­tion in Python, is a part of its syn ­tax and is equal ­ly impor ­tant. Unlike many oth ­er pro ­gram ­ming lan ­guages, Python made it com ­pul ­so ­ry to have an inden ­ta ­tion in it. Adding more to it, Inden ­ta ­tion pro ­vides bet ­ter read ­abil ­i ­ty to the code. Question 7. We all are aware of the accolades that Python has been gaining. But as a professional you should also be able to talk about the difficulties with Python. Can you? With this ques ­tion, the recruiter wants to know whether you have thor ­ough knowl ­edge about Python or not. Only if you are aware of all the flaws of the lan ­guage will you be able to work on them. And there ­by move for ­ward with some of the few flaws of Python are: Python is weak in mobile com ­put ­ing and also in browsers. The lan ­guage has an expan ­sive nature because of which the speed is ham ­pered. Python also has under ­de ­vel ­oped access lay ­ers of data ­base. So it is clear that the lan ­guage is not the per ­fect choice in cas ­es of huge data ­base col ­lec ­tions. The dynam ­i ­cal ­ly typed nature of Python rais ­es run ­time errors because of using duck-typ ­ing. Question 8. What is the use of break and continue in Python? To con ­trol the flow of Python Loops, break and con ­tin ­ue are used. With break, the cur ­rent loop is stopped from get ­ting exe ­cut ­ed any fur ­ther. It trans ­fers the con ­trol alto ­geth ­er to the next block. con ­tin ­ue on the oth ­er hand jumps to the next iter ­a ­tion of the loop with ­out exhaust ­ing the loop. Question 9. What all is Python good for? This is yet anoth ­er ques ­tion that checks the hori ­zon of your knowl ­edge of Python. There are a lot of appli ­ca ­tions of Python. A few of the list ­ings are; Data ­base Access Soft ­ware Devel ­op ­ment Appli ­ca ­tions Sci ­en ­tif ­ic and Numer ­ic Appli ­ca ­tions Web and Inter ­net Devel ­op ­ment Question 10. What is the life cycle of a Thread? When the exe ­cu ­tion of a task involves some wait ­ing, Python threads are tak ­en into con ­sid ­er ­a ­tion by the users. Thread ­ing allows mul ­ti ­ple threads to func ­tion at the same time. A new ­ly cre ­at ­ed thread can be for ­ward ­ed to sched ­ul ­ing with a call to start() on it. The thread enters the run ­ning state only when the exe ­cu ­tion begins. The thread goes into wait ­ing with calls to meth ­ods like sleep() and join(). It is then said to be in the wait ­ing or the blocked list. When a thread moves for ­ward from wait ­ing and exe ­cu ­tion, oth ­er wait ­ing threads in the list come in the line for sched ­ul ­ing. Last ­ly when the thread com ­pletes exe ­cut ­ing, it is ter ­mi ­nat ­ed and con ­sid ­ered to be in the dead state. Question 11. Explain what is a control flow statement? The process of work ­ing for a python pro ­gramme is unique. At first it usu ­al ­ly starts to exe ­cute from the very first line. The pro ­gramme moves from one state ­ment to anoth ­er, only pass ­ing once through each state ­ment. After that it just trans ­ac ­tions the pro ­gramme. Nor ­mal exe ­cu ­tion flow of a pro ­gram can be dis ­turbed and be bent to our will. This is done with the help of con ­trol flow state ­ments. Question 12. Can you give a comparison between Java and Python? This is a tricky ques ­tion because it is not nec ­es ­sary that a Python devel ­op ­er will also have knowl ­edge about Java. How ­ev ­er, as a devel ­op ­er, you should have a basic knowl ­edge, about all the lan ­guages in the tech ­nol ­o ­gy. Of course you can ­not have a through knowl ­edge. For instance; Java is much faster than Python Python on the oth ­er hand is inter ­pret ­ed Java is a plat ­form inde ­pen ­dent lan ­guage Java is ver ­bose but Python is sim ­ple and con ­cise Python man ­dates inden ­ta ­tion where ­as Java needs braces Java is sta ­t ­i ­cal ­ly typed but Python is dynam ­i ­cal ­ly typed Undoubt ­ed ­ly, Java has a stronger data ­base access Question 13. Can you justify that Python is object oriented? This is a fre ­quent ­ly asked Python Inter ­view Ques ­tion and a favourite among recruiters. Python fol ­lows object ori ­ent ­ed pro ­gram ­ming par ­a ­digm that is why it is object ori ­ent ­ed. The object ori ­ent ­ed par ­a ­digm means that it revolves around class ­es and the objects in python. The fea ­tures of Python’s object ori ­ent ­ed pro ­gram ­ming are; Abstrac ­tion Encap ­su ­la ­tion Poly ­mor ­phism Inher ­i ­tance Data hid ­ing Question 14. State the difference between Tuples and List in Python? On the one hand, lists can be edit ­ed for they are muta ­ble. On the oth ­er hand, tuples are immutable and can ­not be edit ­ed. Lists are slow ­er as com ­pared to tuples which are fast. Question 15. Is Python a programming or a scripting language? Python is a gen ­er ­al pur ­pose pro ­gram ­ming lan ­guage, but it is capa ­ble of script ­ing as well. Question 16. How does Python manage memory? The mem ­o ­ry in python is man ­aged by Python Pri ­vate Heap Space. How ­ev ­er, a pro ­gram ­mer does not have access to the pri ­vate heap where all python objects and data struc ­tures are locat ­ed. It is in the hands of python inter ­preter. The allot ­ment for Python objects of heap space is the sole work of Python’s mem ­o ­ry man ­ag ­er. In fact, the core API also gives access to a num ­ber of tools for the pro ­gram ­mer to code. The garbage col ­lec ­tor that is inbuilt in Python recy ­cles all the unused mem ­o ­ry. As a result, this mem ­o ­ry is made avail ­able to the heap space. Question 17. Describe what is Pythonpath? When a mod ­ule is import ­ed, python ­path is the envi ­ron ­ment vari ­able as well as a local vari ­able that comes to use. It is also looked upon to keep a check for the pres ­ence of import ­ed python mod ­ules in a num ­ber of dif ­fer ­ent direc ­to ­ries. The inter ­preter also uses python ­path to deter ­mine which mod ­ule to load. Question 18. Does Python require indentation? Yes, inden ­ta ­tion is nec ­es ­sary in Python. Inden ­ta ­tion spec ­i ­fies a block of code. The indent ­ed block con ­sists of all source codes with ­in the class ­es, loops, anony ­mous func ­tions in python, etc. If in any case the code is not indent ­ed, it will not exe ­cute in an accu ­rate man ­ners and will have errors. Question 19. Is Python case sensitive? This ques ­tion is an easy one and a straight ­for ­ward ques ­tion. So a lot of times, the inter ­vie ­wee doubts their own self worth as to whether he/she knows the right answer or not. Because it gets hard to accept that such a straight ­for ­ward answer can be asked in round of an inter ­view. How ­ev ­er, you need to know that that is exact ­ly what the inter ­view ­er wants to check. Whether you have con ­fi ­dence on your knowl ­edge or not. So answer con ­fi ­dent ­ly that yes, python is a case sen ­si ­tive lan ­guage. Question 20. How are comments in Python written? All the com ­ments writ ­ten in Python start with a # char ­ac ­ter. How ­ev ­er, it is not nec ­es ­sary because some times, com ­ment ­ing in Python is also done with the help of doc ­strings. Python and python script ­ing is the future of tech ­nol ­o ­gy. Stay tuned and keep learn ­ing so that you can build a bright future for your ­self!! python interview questionspython interview questions and answers