Python基础教程(Python基础语法示例)

 integer_variable = 10
float_variable = 3.14
string_variable = "Hello, world!"
boolean_variable = True  

 a = 5
b = 2

add = a + b
subtract = a - b
multiply = a * b
divide = a / b
remainder = a % b  

 # If, elif, else
num = 3

if num < 0:
    print("Negative")
elif num > 0:
    print("Positive")
else:
    print("Zero")

# While loop
count = 0
while count < 5:
    print(count)
    count += 1

# For loop
for i in range(5):
    print(i)  

 def greet(name):
    return "Hello, " + name + "!"

greeting = greet("Alice")
print(greeting)  

  my_list = [1, 2, 3, 4, 5]
my_tuple = (1, 2, 3, 4, 5)

# Accessing elements
print(my_list[0])  # Output: 1

# Modifying a list
my_list[0] = 10
print(my_list)  # Output: [10, 2, 3, 4, 5] 

  my_dict = {'apple': 1, 'banana': 2, 'orange': 3}

# Accessing values
print(my_dict['apple'])  # Output: 1

# Adding a new key-value pair
my_dict['grape'] = 4