Vikram Aruchamy A numpy array is used to store numerical data for manipulation. You can save and load a numpy array in python using the numpy.save() and numpy.load() methods. This tutorial teaches … Read more →
Numpy Arrays are used to store data in array format. You can use the savetxt() method to write a numPy array to a CSV file. Basic Example This tutorial teaches … Read more →
Numpy arrays are used for data manipulation. You can read the csv file into a record array in numpy using the np.genfromtxt() method. This tutorial teaches you how to read … Read more →
Pandas dataframe allows you to store data in a 2-dimensional structure. You can convert select columns in Pandas dataframe to NumPy array using arr = df[[“RegNo”, “Country_Code”]].to_numpy() statement. This tutorial … Read more →
Pandas dataframe store data in a row and column format. You can filter pandas dataframe using In and Not in like SQL using the df.isin() method. This tutorial teaches you … Read more →
Each file has a specific encoding that denotes the characters’ types. You can solve the UnicodeDecodeError: ‘utf-8’ codec can’t decode byte error by detecting the proper encoding of the file … Read more →
CSV files stores data in a comma-separated format. You can export a pandas dataframe to CSV without the header and index using the header=None and index=False parameters in the to_csv() … Read more →
Data might be in multiple CSVs, and you may need it in a single dataframe for analysis. You can import multiple csv files and concatenate them into a single pandas … Read more →
Pandas index columns allow identifying each row uniquely. You can remove the index column in pandas while reading from the CSV file using the parameter index_col=None parameter. You can drop … Read more →
Sometimes you may want to read only specific columns from a CSV file. You can read specific columns from a CSV using read_csv(‘addresses.csv’, usecols=[1,2]) in Pandas. This tutorial teaches you … Read more →