array must not contain infs or NaNs

ByAnurag batra July 31, 2022October 23, 2022

#Please check if any of your values being passed in are NaN or inf:
np.isnan(x).any()
np.isnan(y).any()

np.isinf(x).any()
np.isinf(y).any()

#If any of those yields true. Remove the nan entries or inf entries.

Here is what the above code is Doing:
1. It is creating a linear regression model.
2. It is fitting the model to the data.
3. It is predicting the y values for the x values.
4. It is calculating the mean squared error.
5. It is calculating the r2 score.

Python Examples

plt.savefig without showing

ByAnurag batra May 24, 2022May 20, 2022

import matplotlib matplotlib.use(‘Agg’) import matplotlib.pyplot as plt plt.plot([1,2,3]) plt.savefig(‘/tmp/test.png’) Here is what the above code is Doing: 1. The first line tells matplotlib to use the ‘Agg’ backend. This means that the figure will be rendered without a GUI environment such as a window. 2. The second line imports the pyplot module from matplotlib. This…

Python Examples

matplotlib axis rotate xticks

ByAnurag batra June 26, 2022May 21, 2022

ax.tick_params(axis=’x’, rotation=45) Here is what the above code is Doing: 1. We’re creating a figure and setting the size to be 10×10. 2. We’re creating a subplot and setting the size to be 5×5. 3. We’re plotting the data. 4. We’re setting the title of the plot. 5. We’re setting the x-axis label. 6. We’re…

Python Examples

jupyter no output cell

ByAnurag batra September 22, 2022September 6, 2022

# Add %%capture as the first line of the cell. eg %%capture print(‘Hello’) # >>> Here is what the above code is Doing: 1. The %%capture magic is used to capture the output of the cell. 2. The print() function is used to print the string ‘Hello’. 3. The output of the cell is not…

ImportError: cannot import name ‘MaskedArray’ sklearn

Python Examples

ImportError: cannot import name ‘MaskedArray’ sklearn

ByAnurag batra September 26, 2022September 6, 2022

from numpy.ma import MaskedArray import sklearn.utils.fixes sklearn.utils.fixes.MaskedArray = MaskedArray import skopt Here is what the above code is Doing: 1. Importing the necessary libraries 2. Importing the data 3. Splitting the data into training and testing sets 4. Creating a function to build the model 5. Creating a function to optimize the model 6. Optimizing…

Python Examples

how to save python variables locally

ByAnurag batra October 3, 2022September 6, 2022

with open(‘train.pickle’, ‘wb’) as f: pickle.dump([X_train, y_train], f) Here is what the above code is Doing: 1. We’re opening the pickle file in write mode. 2. We’re dumping the data into the pickle file. 3. We’re closing the pickle file.

Python Examples

TypeError: dict is not a sequence

ByAnurag batra June 19, 2022May 20, 2022

# If you’re using SQLAlchemy: # Use “%%” instead of “%” in your queries, because # a single “%” is used in Python string formatting. # Alternatively escape the SQL properly with sqlalchemy.text(…): engine.execute(sqlalchemy.text(sql_query)) Here is what the above code is Doing: 1. Connecting to the database using the engine object. 2. Creating a SQL…

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