Python if Usage Examples
Python3 ExamplesThe following example usesif...elif...elsestatement to determine whether a number is positive, negative, or zero:
Example (Python 3.0+)
# Filename : test.py
# author by : www.example.com
# User input number
num = float(input("Enter a number:"))
if num > 0:
print("Positive")
elif num == 0:
print("zero")
else:
print("Negative")
The output of the above code is:
输入一个数字: 3 正数
We can also use nested if statements to achieve this:
Example (Python 3.0+)
# Filename ：test.py
# author by : www.example.com
# Nested if statement
num = float(input("Enter a number:"))
if num >= 0:
if num == 0:
print("zero")
else:
print("Positive")
else:
print("Negative")
The output of the above code is:
输入一个数字: 0 零Other Extensions