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Python, Django & SQL Online Test

About the test:

The Python, Django & SQL Test is preferred by recruiters to assess on-the-job skills of candidates before an interview. It reduces technical screening time by 80% by enabling employers to identify qualified candidates.

Covered skills:

  • Snaren en cijfers
  • Lijsten, woordenboeken, tupels en sets
  • String -opmaak
  • Collecties
See all covered skills

9 reasons why
9 reasons why

Adaface Python, Django & SQL Online Test is the most accurate way to shortlist Full Stack Developers



Reason #1

Tests for on-the-job skills

The Python, Django & SQL Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

Non-googleable questions & proctoring features enable you to be comfortable with conducting assessments online. The Python, Django & SQL Online Test is ideal for helping recruiters identify which candidates have the skills to do well on the job.

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface ->
Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

Dit zijn slechts een klein monster uit onze bibliotheek met meer dan 10.000 vragen. De werkelijke vragen hierover Python, Django & SQL Test zal niet-googelbaar zijn.

🧐 Question

Hard

Session
File Handling
Dictionary
Solve
 image
The function high_sess should compute the highest number of events per session of each user in the database by reading a comma-separated value input file of session data. The result should be returned from the function as a dictionary. The first column of each line in the input file is expected to contain the user’s name represented as a string. The second column is expected to contain an integer representing the events in a session. Here is an example input file:
Tony,10
Stark,12
Black,25
Your program should ignore a non-conforming line like this one.
Stark,3
Widow,6
Widow,14
The resulting return value for this file should be the following dictionary: { 'Stark':12, 'Black':25, 'Tony':10, 'Widow':14 }
What should replace the CODE TO FILL line to complete the function?
 image

Medium

ZeroDivisionError and IndexError
Exceptions
Solve
What will the following Python code output?
 image

Easy

Max Code
Arrays
Solve
Below are code lines to create a Python function. Ignoring indentation, what lines should be used and in what order for the following function to be complete:
 image

Easy

URL Dispatcher
Routes
Solve
Review the following sample Django URL.conf:
 image
Pick the correct statements:

A: A request to /books/2015/04/ would match the third entry in the list. Django would call the function views.year_books(request, year=2015, month=3).
B: A request to /books/2015/04/ would match the second entry in the list. Django would call the function views.year_books(request, year=2015).

C: A request to /books/2023/ will match the first entry in the list. Django would call the the function views.custom_newyear_2023(request).
D: A request to /books/2023/ would match the second entry in the list. Django would call the function views.year_books(request, year=2023).

E: /books/2022 would not match any of these patterns, because each pattern requires that the URL end with a slash.
F: A request to /books/2022 would match the second entry in the list. Django would call the function views.year_books(request, year=2022).

Medium

External Bank Transfer
Database Transactions
Solve
Review the following Django code for a banking application:
 image
The code needs to debit an account with the provided amount and deposit the amount in an external entity. Here’s how the code is broken:

1) First, the amount is debited from the account by creating a new row in BalanceLine table.
2) Next, a new row is created in the DB in ExternalTransfer table and a new id (used as unique reference) is created for the transfer.
3) An external 3rd party API call is made using the new id created in step 2.

The function transfer_to_other_bank is called as shown below:
 image
Pick the correct statements:

A: If post_transfer_emails() raises an exception, the database transactions that happened in transfer_to_other_bank are not rolled back since they are listed in a separate atomic transaction.
B: If post_transfer_emails() raises an exception, the database transactions (new rows in ExternalTransfer and BalanceLine tables) are rolled back. The banking_api call is called again with a null reference.
C: If post_transfer_emails() raises an exception, the database transactions are rolled back but the banking_api is not called again.
D: If post_transfer_emails() raises an exception, the banking_api is called again with rollback=True. If the response is success, then the database transactions are rolled back. If the response is failure, the database transactions are committed.

Easy

Query retired people
Solve
An HRTech startup has the following Django code:
 image
We want a QuerySet with all Person objects where retired == True and age != 45. Which of the following do you think we should use?
 image

Medium

Multi Select
Solve
Consider the following SQL table:
 image
How many rows does the following SQL query return?
 image

Easy

Select & IN
Solve
Consider the following SQL table:
 image
Which of the following SQL queries would return the year when neither a football or cricket winner was chosen?
 image

Medium

With, AVG & SUM
Solve
Consider the following SQL table:
 image
How many tuples does the following query return?
 image

Easy

Registration Queue
Logic
Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount.
For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition.
⚠️⚠️⚠️ Note:
- The first line of the input is the length of the array. The second line contains all the elements of the array.
- The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function.
- You need to "print" the final result (not return it) to pass the test cases.

For the example discussed above, the input will be:
5
20 70 -40 30 -10

Your code needs to print the following to the standard output:
20 70 30 -40 -10

Medium

Longest Road
logic
hashmaps
Solve
A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. 

The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor.

The input is an array of "strings" which needs to be converted from string to integer/number inside the function.

Medium

Visitors Count
Strings
Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. 
Example:

Input:
WWMMWWCCC

Expected Output: 
4W3C2M

Explanation: 
‘W’ has the highest count, then ‘C’, then ‘M’. 
⚠️⚠️⚠️ Note:
- The input is already parsed and passed to a function.
- You need to "print" the final result (not return it) to pass the test cases.
- If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’.
- If any of them have the same count, the output should follow this order - M, W, C.
🧐 Question🔧 Skill

Hard

Session
File Handling
Dictionary
2 mins
Python
Solve

Medium

ZeroDivisionError and IndexError
Exceptions
2 mins
Python
Solve

Easy

Max Code
Arrays
2 mins
Python
Solve

Easy

URL Dispatcher
Routes
2 mins
Django
Solve

Medium

External Bank Transfer
Database Transactions
3 mins
Django
Solve

Easy

Query retired people
2 mins
Django
Solve

Medium

Multi Select
2 mins
SQL
Solve

Easy

Select & IN
3 mins
SQL
Solve

Medium

With, AVG & SUM
2 mins
SQL
Solve

Easy

Registration Queue
Logic
30 mins
Coding
Solve

Medium

Longest Road
logic
hashmaps
25 mins
Coding
Solve

Medium

Visitors Count
Strings
30 mins
Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Session
File Handling
Dictionary
Python
Hard2 mins
Solve
ZeroDivisionError and IndexError
Exceptions
Python
Medium2 mins
Solve
Max Code
Arrays
Python
Easy2 mins
Solve
URL Dispatcher
Routes
Django
Easy2 mins
Solve
External Bank Transfer
Database Transactions
Django
Medium3 mins
Solve
Query retired people
Django
Easy2 mins
Solve
Multi Select
SQL
Medium2 mins
Solve
Select & IN
SQL
Easy3 mins
Solve
With, AVG & SUM
SQL
Medium2 mins
Solve
Registration Queue
Logic
Coding
Easy30 minsSolve
Longest Road
logic
hashmaps
Coding
Medium25 minsSolve
Visitors Count
Strings
Coding
Medium30 minsSolve
Reason #4

1200+ customers in 75 countries

Brandon

Met Adaface konden we ons eerste screeningproces optimaliseren met meer dan 75%, waardoor we kostbare tijd vrijmaken voor zowel wervingsmanagers als ons talent -acquisitieteam!


Brandon Lee, Hoofd van mensen, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Python, Django & SQL Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Python, Django & SQL Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & comparative results

Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring


What topics are covered in the Python, Django & SQL Online Test?

Snaren en cijfers
String -opmaak
Lijsten, woordenboeken, tupels en sets
Collecties
Functies en lambdas
Decorateurs
Domein
args/kwargs en standaardparameterwaarden
Het concept van mutabiliteit
Ingebouwde functies
Debugging en foutafhandeling
Type hint
Modules en het installeren van bibliotheken
Object georiënteerd programmeren
Functioneel programmeren
Lambdas
Decorateurs
Generatoren
Samenstelling en erfenis
#VALUE!
Database -interacties
Testen van een eenheid
Regex (reguliere uitdrukkingen)
Web schrapen
Algoritmen en gegevensstructuren
Asynchrone programmering
#VALUE!
Modellen / django orm
Python Object-georiënteerde programmering (OOP)
Python -constructen (generatoren, iterators, decorateurs, lambda)
Jinja -filters
Keer bekeken
Naamruimte
Django -sjabloon
Vormen
Domein
Django -model
Django Orm
Authenticatie autorisatie
Naam binding
Modelform django -opdrachten
Stdlib
Databases testen
Creatieorder
TransactionTestCase
Herbruikbare toepassingen
Testloper
Dekking.py
Queryset
Het relationele model
SQL Basics
SQL -functies
Gegevensaanpassingstaal
Gegevensquerytaal
Woed
SQL -filtering / waar instructie
Subqueries
Indexen
3 gewaardeerde logica
SQL voegt zich bij
Vensterfuncties
Datumfiltering en tijdstempels
Geaggregeerde functies
Operator Prioriteit
Bestellen door
Groep door
Top-down ontwerp
Bottom-up ontwerp
Entiteitsrelatie diagram
Normalisatie
Databasetypen
Multi-tafel select
Toestemming
Back -upstrategieën
Transacties
Gegevenstypen
Keer bekeken
Schorsen
Replicatie
Back -ups
Verticaal + horizontale schaling
Gedistribueerde versus gecentraliseerde databases
Databasebeveiliging
SQL -injecties
Toegangscontrole
Computer Fundamentals
Lettercodering
Nummercodering
Vervanging
Puzzels van coderende verslechtering
Non-verbale redenering
SQL -concepten
Zakelijke analyse
Codeer-verslechtering
Programmeertalen
Computer architectuur
Basic DBMS -concepten
Solide principes
Automatiseringssystemen
Besluitvorming
Non-verbale redenering
Probleemoplossende aanpak
Singapore government logo

De aanwervingsmanagers vonden dat door de technische vragen die ze tijdens de panelinterviews stelden, ze konden vertellen welke kandidaten betere scores hadden, en onderscheidden zich met degenen die niet zo goed scoren. Zij zijn zeer tevreden met de kwaliteit van kandidaten genomineerd met de ADAFACE -screening.


85%
Vermindering van de screeningstijd

FAQs

Kan ik meerdere vaardigheden combineren in één aangepaste beoordeling?

Ja absoluut. Aangepaste beoordelingen zijn opgezet op basis van uw functiebeschrijving en bevatten vragen over alle must-have vaardigheden die u opgeeft.

Heeft u functies tegen latere of proctoring op hun plaats?

We hebben de volgende anti-cheating-functies op zijn plaats:

  • Niet-googelbare vragen
  • IP Proctoring
  • Web Proctoring
  • Webcam Proctoring
  • Plagiaatdetectie
  • Beveilig browser

Lees meer over de Proctoring -functies.

Hoe interpreteer ik testscores?

Het belangrijkste om in gedachten te houden is dat een beoordeling een eliminatietool is, geen selectietool. Een vaardighedenbeoordeling is geoptimaliseerd om u te helpen kandidaten te elimineren die niet technisch gekwalificeerd zijn voor de rol, het is niet geoptimaliseerd om u te helpen de beste kandidaat voor de rol te vinden. Dus de ideale manier om een ​​beoordeling te gebruiken is om een ​​drempelscore te bepalen (meestal 55%, wij helpen u benchmark) en alle kandidaten uit te nodigen die boven de drempel scoren voor de volgende interviewrondes.

Voor welk ervaringsniveau kan ik deze test gebruiken?

Elke ADAFACE -beoordeling is aangepast aan uw functiebeschrijving/ ideale kandidaatpersonage (onze experts van het onderwerp zullen de juiste vragen kiezen voor uw beoordeling uit onze bibliotheek van 10000+ vragen). Deze beoordeling kan worden aangepast voor elk ervaringsniveau.

Krijgt elke kandidaat dezelfde vragen?

Ja, het maakt het veel gemakkelijker voor u om kandidaten te vergelijken. Opties voor MCQ -vragen en de volgorde van vragen worden gerandomiseerd. We hebben anti-cheating/proctoring functies. In ons bedrijfsplan hebben we ook de optie om meerdere versies van dezelfde beoordeling te maken met vragen over vergelijkbare moeilijkheidsniveaus.

Ik ben een kandidaat. Kan ik een oefentest proberen?

Nee. Helaas ondersteunen we op dit moment geen oefentests. U kunt echter onze voorbeeldvragen gebruiken voor praktijk.

Wat zijn de kosten van het gebruik van deze test?

U kunt onze [prijsplannen] bekijken (https://www.adaface.com/pricing/).

Kan ik een gratis proefperiode krijgen?

Ja, u kunt gratis aanmelden en een voorbeeld van deze test.

Ik ben net naar een betaald plan verhuisd. Hoe kan ik een aangepaste beoordeling aanvragen?

Hier is een korte handleiding over hoe een aangepaste beoordeling aanvragen op Adaface.

Join 1200+ companies in 75+ countries.
Probeer vandaag de meest kandidaatvriendelijke vaardighedenbeoordelingstool.
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