The decision-making statement is intended to regulate the flow of programme execution based on the condition. If the condition is true, the block will proceed; if the condition is false, the block will not accomplish.
Decision-making Statement
Selection statements are also considered to as decision making statements or branching statements in Python. Selection statements are employed to decide a section of the programme to run based on a criteria. The following selection statements are available in Python.
We often see situations in programming where we must pick which block of code should be executed based on a condition.
if statement
A boolean expression contains one or more statements in an if statement.
if-else statement
When a boolean expression is FALSE, an if statement might be proceeded by an optional else statement.
If a condition is true, the if statement will operate a block of statements; if the condition is false, the if statement will not execute a set of statements. What if the condition is false and we want to conduct something different? The else clause is now in play. When the condition is false, we may use the else statement in association with the if statement to run a block of code.
Syntax:
if (condition):
# Executes this block if
# condition is true
else:
# Executes this block if
# condition is false
Example
# python program to illustrate If else statement
#!/usr/bin/python
i = 40
if (i < 20):
print("i is smaller than 20")
print("i'm in if Block")
else:
print("i is greater than 20")
print("i'm in else Block")
print("i'm not in if and not in else Block")
Output:
i is greater than 20
i'm in else Block
i'm not in if and not in else Block
if-elif statement
Statements nested
One if or else if statement can be placed within another if or else if statement (s).
Conclusion
In this blog , we learned about python decision making , decision making statement in python if else. Visit - to learn another decision making statements in python .
Commentaires