Algorithmic trading is revolutionizing financial markets, enabling traders to execute strategies with precision and efficiency. In this video, we dive into algorithmic trading with Python, covering essential strategies used by quantitative traders for crypto trading. We’ll also explore the best algorithmic trading software in the USA and key insights into quantitative analysis for trading in Singapore. Plus, get a practical guide to Freqtrade strategy, a powerful open-source tool for automated trading.
Now we are starting with some very very interesting but very useful topics so today I’ll start with functions which is extremely important and you have to use whether you want or not so let’s start with functions so first of all let’s quickly understand a little bit theory of functions then we’ll jump on the coding examples so first of all what is a function so a function is a block of organized reusable code that performs a single action so what we do generally until now we are writing only the lines of code and those lines are not organized so in function what we can do for a single purpose like for addition for multiplication.
We can create different different functions and then they will perform only that action so we will just call that function and that function will perform the operation inside and it will returns as the value for example we want to perform at 2 + 3 + 4 okay so what we can do we can just call the function which performs the addition operation and we just provide these values to 2 3 4 and it will return as the sum we we don’t need to take care how the addition works right so that’s how it works and once the function is created you can call it multiple times and you can use it again and again so that’s why it is known as the organized and reusable code that performs a single function okay the function provides better modularity and high degree of code reusability modularity means when we have a big problem right and we can split that problem into few fun functions for example let’s say we are creating a python code for calculator in calculator we have addition subtraction division multiplication so what.
We can do we can separate all those operations in four functions right one function for addition another is for uh subtraction and the next is for multiplication and division so that’s why it provides a better modularity and a high degree of code reusability so once those four functions are created we can use them again and again we don’t need to write the code again right we can just call and we can use that now so how to define a function so let’s say first we Define the def keyword so it will always be there whenever we are defining a function def keyword right then followed by the function name so function name as we have already studied that is also an identifier and we have to make sure that all those conditions are meeting here so.
We can write a function name let’s say we can define a function name with addition calculator okay then a parenthesis so we will write a parenthesis which can include parameters and colon so inside that we can have parameters which we will learn shortly and then we have to write a colon here okay so you can say a def keyword then the function name then a parenthesis and a column and inside that parenthesis we can have different parameters which.
We will learn shortly then the indented block of the code following the colon is the body of the function so once you have typed this you just hit enter okay so the python interpreter will automatically take you the right indented place so let’s say your cursor is here so make sure that in Python indentation makes a lot of difference if you do not indent your code correctly it will throw an error so it has to be correctly indented right so let’s say when you type this colon you hit enter and your cursor will be here so from here you start writing your further code okay so this is the basic thing that what is a function and how to define a function so let’s say we define a function for addition again so what.
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Day 7: Python Functions
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