What are the conditional statements in Python?
What are the conditional statements in Python?
I'm happy to help you with that!
Conditional statements in Python are used to execute different blocks of code based on certain conditions. There are several types of conditional statements in Python, including:
If Statement: The most basic form of a conditional statement is the if statement. It takes the following format:if condition:
do something
The condition
can be any valid Python expression that evaluates to either True or False. If the condition is True, the code inside the indented block will be executed. If it's False, the code won't run.
For example:
x = 5
if x > 10:
print("x is greater than 10")
print("This line always runs")
When you run this code, the output will be "This line always runs" because x
is not greater than 10.
if condition:
do something
else:
do something else
For example:
x = 5
if x > 10:
print("x is greater than 10")
else:
print("x is less than or equal to 10")
print("This line always runs")
When you run this code, the output will be "x is less than or equal to 10" because x
is not greater than 10.
if condition1:
do something
elif condition2:
do something else
else:
do something else if all others are false
For example:
x = 5
if x > 10:
print("x is greater than 10")
elif x == 5:
print("x is equal to 5")
else:
print("x is less than 5")
print("This line always runs")
When you run this code, the output will be "x is equal to 5" because x
is indeed equal to 5.
if condition1:
if condition2:
do something
else:
do something else
else:
do something else
For example:
x = 5
y = 10
if x > 10:
if y > 15:
print("x and y are both greater than 10")
elif y == 10:
print("x is greater than 10, but y is equal to 10")
else:
print("x is greater than 10, but y is less than 10")
else:
if y > 15:
print("y is greater than 10, but x is not")
elif y == 10:
print("y is equal to 10, and x is not")
else:
print("neither x nor y are greater than 10")
When you run this code, the output will depend on the values of x
and y
.
a if condition else b
). It takes the following format:
result = value if condition else other_value
For example:
x = 5
y = "greater than 10" if x > 10 else "less than or equal to 10"
print(y)
When you run this code, the output will be "less than or equal to 10" because x
is not greater than 10.
I hope that helps!
Is else a conditional statement in python with example
I'd be happy to help you with that!
The else
statement is actually part of the syntax for Python's control structures, specifically the if-else
statement and the try-except
block.
Let's start with the if-else
statement. The basic syntax for this statement is:
if condition:
code to execute if condition is true
else:
code to execute if condition is false
Here's an example:
x = 5
y = 3
if x > y:
print("x is greater than y")
else:
print("x is less than or equal to y")
Output: x is less than or equal to y
In this case, the condition x > y
is false, so the code inside the else
block gets executed.
Now let's look at the try-except
block. The basic syntax for this block is:
try:
code that might raise an exception
except ExceptionType:
code to execute if an exception of type ExceptionType is raised
else:
code to execute if no exceptions are raised
Here's an example:
def divide(a, b):
try:
result = a / b
except ZeroDivisionError:
print("Cannot divide by zero!")
else:
print(f"{a} divided by {b} is {result}")
divide(10, 2) # Output: 10 divided by 2 is 5.0
divide(10, 0) # Output: Cannot divide by zero!
In this case, the code inside the try
block raises a ZeroDivisionError
when dividing by zero. The except
block catches this exception and prints an error message. If no exceptions are raised (like in the first call to the function), the code inside the else
block gets executed.
Some important things to note:
Theelse
statement is only executed if the code inside the try
block doesn't raise any exceptions. The except
statement can have multiple clauses, like this: except (ExceptionType1, ExceptionType2):
. You can also specify a variable in the except
clause to catch and store the exception instance.
In summary, Python's else
statement is used with control structures like if-else
or try-except
to execute code based on conditions.