Dictionaries Basics 📖

Dictionary (Dict) na Python-la oru super useful data structure! List-la items ellam line-a (0, 1, 2...) irukkum, aana Dictionary-la ellame Key:Value (Peyar:Details) jodi jodi-ya irukkum.

🔍 Deep Dive: Real-world Analogy (Phone Contacts 📱)

Unga phone contacts-a yosichu paarunga. Neenga phone number-a (Value) vachi aal pera thedamateenga, aal pera (Key) thedi dhaan number-a edupeenga! Idhe concept dhaan Dictionary. Oru specific "Key"-a kudutha, adhoda "Value"-a Python thookitu varum!

1. Creating a Dictionary (Contact list ezhudhudhal)

Dictionary-a create panna {} (curly braces) use pannanum.

contacts = {
    "Amma": "9876543210",
    "Appa": "9012345678",
    "Nanban": "9999999999"
}

Idhoda meaning: contacts nu oru dictionary. Adhula 3 contacts irukku. "Amma" dhaan Key, "9876543210" dhaan Value. Ovvoru jodiyum , (comma) potu pirikkanum.

2. Accessing Values (Number-a theduradhu)

Oru value-a edukkanum na, adhoda Key-a [] bracket ulla kudukkanum.

# Appa oda number ena nu thedurom
print(contacts["Appa"])

Idha theliva purinjikka indha interactive visualizer-a step-by-step test pannunga:

contacts = {
"Amma": "9876543210",
"Appa": "9012345678",
"Nanban": "9999999999"
}
print(contacts["Appa"])
What is happening?
'Next Step' click pannunga, aarambikkalam!
 Next Step

💡 Did You Know? Dictionary-la Keys eppovume UNIQUE-a (thaniya) dhaan irukkanum. Rendu "Appa" nu create panna, kadaisiya irukka "Appa" dhaan save aagum!

Your Turn! (Unga neram!)

car nu oru dictionary create pannunga. Adhula brand nu oru key vechu "Ford" nu set pannunga, apram model nu oru key vechu "Mustang" nu set pannunga. Kadaisiya, car["brand"]-a print panni paarunga!