It's simply pointless to create variable variable names. Why? They are unnecessary: You can store everything in lists, dictionarys and so on; They are hard to create: You have to use exec or globals() You can't use them: How do you write code that uses these variables? You have to use exec/globals() again; Using a list is much easier:

Any set of variables can also be wrapped up in a class. "Variable" variables may be added to the class instance during runtime by directly accessing the built-in dictionary through __dict__ attribute. The following code defines Variables class, which adds variables (in this case attributes) to its instance during the construction.

os.environ behaves like a python dictionary, so all the common dictionary operations can be performed. In addition to the get and set operations mentioned in the other answers, we can also simply check if a key exists. The keys and values should be stored as strings. Python 3. For python 3, dictionaries use the in keyword instead of has_key

You can create dummy variables to handle the categorical data # Creating dummy variables for categorical datatypes trainDfDummies = pd.get_dummies(trainDf, columns=['Col1', 'Col2', 'Col3', 'Col4']) This will drop the original columns in trainDf and append the column with dummy variables at the end of the trainDfDummies dataframe.

Sep 18, 2021 · # create a dictionary >>> kwargs = {} # add a key of name and assign it a value, later we'll use this key as a variable >>> kwargs['name'] = 'python' # an example function to use the variable >>> def print_name(name): ...

Feb 29, 2012 · I'm looking for a way to create a dictionary without writing the key explicitly. I want to create a function that gets the number of variables and creates a dictionary where the variable names are the keys and their values are the variable values. Instead of …

Python: How to create new variables in for loops? 3. How to generate new list from variable in a loop? 1 ...

Sep 20, 2010 · I am looking for some advice as to the best way to generate a file path using variables, currently my code looks similar to the following: path = /my/root/directory for x in list_of_vars: if os.path.isdir(path + '/' + x): # line A print(x + ' exists.') else: os.mkdir(path + '/' + x) # line B print(x + ' created.')

Feb 1, 2011 · The cleanest approach by far that I have ever seen is to directly add variables (i.e. attributes) to your program (i.e. main module), as answered in another question on StackOverflow:

Feb 5, 2011 · pip install python-dotenv After that, create a .env file that has the following entry: BASE_URL = "my_base_url" Then import the module into your Python file. import os from dotenv import load_dotenv # Load the environment variables load_dotenv() # Access the environment variable print(os.getenv("BASE_URL"))