Interview Practice
Page 5 of 5
Operators are symbols used to perform operations on variables and values.
Main types of operators in Python:
Arithmetic operators
Comparison operators
Logical operators
Assignment operators
Membership operators
Identity operators
Example:
a = 10
b = 5
print(a + b)
Conditional statements are used to make decisions in a program based on conditions.
Python mainly uses:
if
elif
else
Example:
age = 18
if age >= 18:
print("Eligible")
else:
print("Not Eligible")
Conditional statements help control program flow.
The pass statement is a placeholder statement that does nothing. It is used when a block of code is required syntactically but no implementation is written yet.
Example:
def my_function():
pass
It is commonly used during development.
The range() function generates a sequence of numbers and is commonly used with loops.
Example:
for i in range(5):
print(i)
Output:
0
1
2
3
4
enumerate() is used to get both the index and value while iterating through a sequence.
Example:
names = ["Aman", "Rahul"]
for index, value in enumerate(names):
print(index, value)
It improves readability compared to manually managing indexes.
zip() combines multiple iterables element by element.
Example:
names = ["Aman", "Rahul"]
marks = [90, 85]
result = zip(names, marks)
print(list(result))
Output:
[('Aman', 90), ('Rahul', 85)]