Learn

What’s new for me Do not need to declare variables indentation replaces curly braces to divide code blocks Grammar Assigning value to multiple variables x, y, z = 1, 2, "hello" Define a global variable in local function def myfunc(): global x x = "fantastic" Change the value of a global variable inside the function x = "declan" def myfunc(): global x x = "declan and jessica" New data type for me Sample Data Type x = 1j complex x = ["apple", "banana", "cherry"] list x = ("apple", "banana", "cherry") tuple x = range(6) range x = {"name" : "Bill", "age" : 63} dict x = {"apple", "banana", "cherry"} set x = frozenset({"apple", "banana", "cherry"}) frozenset x = True bool x = b"Hello" bytes x = bytearray(5) bytearray x = memoryview(bytes(5)) memoryview Specifying the data type x = dataType(value) Verify the data type x = 'declan' type(x) Random number import random x = random.

import java.

import java.

import java.

Question My thought Nothing… The problem is pretty easy, however it troubled me for a quite long time.

First of all, let’s see what extensions I am using now.

ArrayList // the data type must be a type of class ArrayList<String> a = new ArrayList<String>(); ArrayList<Integer> b = new ArrayList<Integer>(); // the size of the ArrayList arrayList.

We do more than change the world.

Now I am on the bullet train from Xi’an to Baoding, crossing one tunnel after another, passing one bridge after another.

So, it’s time to prepare for the final exam and enjoy the only moment we have in fundation period.