Sözlüklere Giriş

Sözlükler Nedir?

Sözlük Oluşturma

# Creates a dictionary of student grades
grades = {
    "Alice": 85,
    "Bob": 92,
    "Charlie": 78
}

Sözlük Değerlerine Erişme

# Accesses the grade of Alice using square brackets
print(grades["Alice"])  # Output: 85

# Accesses the grade of Bob using the get() method
print(grades.get("Bob"))  # Output: 92

Sözlüğe Öğe Ekleme

# Adds a new student to the grades dictionary
grades["Diana"] = 88

# Prints the updated dictionary
print(grades)  # Output: {'Alice': 85, 'Bob': 92, 'Charlie': 78, 'Diana': 88}

Sözlük Değerlerini Değiştirme

# Updates Charlie's grade
grades["Charlie"] = 82

# Prints the updated grade for Charlie
print(grades["Charlie"])  # Output: 82

Sözlükten Öğe Kaldırma

# Removes Bob from the grades dictionary using del
del grades["Bob"]

# Removes Diana from the grades dictionary using pop()
grades.pop("Diana")

# Prints the updated dictionary
print(grades)  # Output: {'Alice': 85, 'Charlie': 82}

Sözlükte Yineleme

# Iterates through the dictionary and prints keys and values
for student, grade in grades.items():
    print(student + " scored " + str(grade))
    
# Output:
# Alice scored 85
# Charlie scored 82

# Creates a dictionary of fruits and their colors
fruits = {
    "apple": "red",
    "banana": "yellow",
    "grape": "purple"
}

# Updates the color of banana
fruits["banana"] = "green"

# Removes grape from the dictionary
del fruits["grape"]

# Prints the dictionary
print(fruits)

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