In some python scripts, you may see a function definition and a conditional statement that looks like the example below: In this code, there is a function called main() that prints the phrase “Hello World!” when the Python interpreter executes it. There is also a conditional (or if) statement that checks the value of __name__…
Symbol(s) Meaning Example Example Matches * Matches the preceding character, subexpression, or bracketed character, 0 or more times a*b* aaaaaaaa, aaaaabbbb, bbbbbbb + Matches the preceding character, subexpression, or bracketed character, 1 or more times a+b+ aaaaaab, aaaabbbbb, abbbbbbb [] Matches any character within the brackets (i.e., “Pick any one of these things”) [A-Z]* APPLE,…
You want to find out which fraction of your car’s use is for commuting to work, and which is for personal use. You know the one-way distance from your home to work. For a particular period, you recorded the beginning and ending mileage on the odometer and the number of work days. Write an algorithm…
You want to decide whether you should drive your car to work or take the train. You know the one-way distance from your home to your place of work, and the fuel efficiency of your car (in miles per gallon). You also know the one-way price of a train ticket. You assume the cost of…
In order to estimate the cost of painting a house, a painter needs to know the surface area of the exterior. Develop an algorithm for computing that value. Your inputs are the width, length, and height of the house, the number of windows and doors, and their dimensions. (Assume the windows and doors have a…
Write an algorithm to settle the following question: A bank account starts out with $10,000. Interest is compounded monthly at 0.5 per cent per month. Every month, $500 is withdrawn to meet college expenses. After how many years is the account depleted? State the current bank statement total is $10,000 State the monthly rate is…
A virtual environment is created on top of an existing Python installation, known as the virtual environment’s “base” Python. It may optionally be isolated from the packages in the base environment, so only those explicitly installed in the virtual environment are available. A virtual environment is Running this command creates the target directory Command to…
According to the “datareader” official site, to access the remote Yahoo Finance Data, it is suggested to use the following code: These codes will pop up an error message: “TypeError: string indices must be integers”. Here is a solution to help you to get the Yahoo Finance remote data. At first, install yfinance by Then,…
The following code doesn’t work. Without any reason, the code above will give you an error message: ModuleNotFoundError: No module named ‘pandas_datareader’ After seeking a solution from Google search, I find that most of someones suggest uninstalling pandas_datareader, and then, reinstalling again. However, those are not working to solve this problem. Lets go to the…
I’m trying to test my blog site by the urllib.request. Unfortunately, my blog site has SSL (Secure Sockets Layer) enabled, and returns an urlopen error, which is shown below: The following simple code is running on my Macbook Pro. But these three lines Python code run successfully without any error on Linux. from urllib.request import…