Returns values from a for loop in python

I'm trying to figure out the syntax for passing arguments from one list or dict to another in the for loop syntax. The desired result I'm looking for is this: for bean in beans: if bean.type ==...

Python - Unflatten dict

I have this multi-dimensional dict: a = {'a' : 'b', 'c' : {'d' : 'e'}} And written simple function to flatten that dict: def __flatten(self, dictionary, level = []): tmp_dict = {} for...

Pandas - How to flatten a hierarchical index in columns

I have a data frame with a hierarchical index in axis 1 (columns) (from a groupby.agg operation): USAF WBAN year month day s_PC s_CL s_CD s_CNT tempf ...

Caching a generator

A recent similar question (https://stackoverflow.com/questions/19500030/isinstancefoo-types-generatortype-or-inspect-isgeneratorfoo/19500538#19500538) got me curious about how to implement this...

Clean dynamically generated nested Tuples

I have a class whose __iter__() method return a itertools.product() of a dynamically generated data. This data do a Cartesian product of arbitrarily nested dicts, and now I need to flatten it,...

Using plotly in Jupyter to create animated chart in off-line mode

I've been trying to get the "Filled-Area Animation in Python" example to work using plotly in offline mode in a Jupyter notebook. The example can be found here:...

Any better way to flatten and rebuild nested dict

One solution posted by myself, but I'm not satisfied with it, which is too complicated. Sometimes, we need to flatten one dict, and sometimes in reverse, for example: a nested dict looks like...

Creating a nested dictionary from a flattened dictionary

I have a flattened dictionary which I want to make into a nested one, of the form flat = {'X_a_one': 10, 'X_a_two': 20, 'X_b_one': 10, 'X_b_two': 20, 'Y_a_one':...

Python flatten multilevel/nested JSON

I am trying to convert JSON to CSV file, that I can use for further analysis. Issue with my structure is that I have quite some nested dict/lists when I convert my JSON file. I tried to use pandas...

Casting a column to JSON/dict and flattening JSON values in a column in pyspark

I am new to Pyspark and I am figuring out how to cast a column type to dict type and then flatten that column to multiple columns using explode. Here's how my dataframe looks like: col1 |...

Why does my model predict the same label?

I am training a small network and the training seems to go fine, the val loss decreases, I reach validation accuracy around 80, and it actually stops training once there is no more improvement...

How do I use matplotlibs colormap alpha-values to make tripcolor plot fade to transparency?

I want to plot a probability distribution over a map using tripcolor and want the distribution to fade to transparency where the probability is low/zero. However tripcolor doesn't seem to accept...

How to flatten a nested JSON recursively, with flatten_json

This question is specific to using flatten_json from GitHub Repo: flatten The package is on pypi flatten-json 0.1.7 and can be installed with pip install flatten-json This question is specific to...

Tensorflow 2 throwing ValueError: as_list() is not defined on an unknown TensorShape

I'm trying to train a Unet model in Tensorflow 2.0 which takes as input an image and a segmentation mask, but I'm getting a ValueError : as_list() is not defined on an unknown TensorShape. The...

I am getting java.lang.NullPointerException on Jenkisn while calling method from groovy script

I am trying to call a method of the groovy script from Jenkins pipeline script and in that, I am getting java.lang.NullPointerException: Cannot invoke method getBuildsByDomain() on null...

Extract set of leaf values found in nested dicts and lists excluding None

I have a nested structure read from YAML which is composed of nested lists and/or nested dicts or a mix of both at various levels of nesting. It can be assumed that the structure doesn't contain...

AttributeError: module 'tensorflow' has no attribute 'layers'

I am trying to implement the VGG but am getting the above odd error. I am running TFv2 on Ubuntu. Could this be because I am not running CUDA? The code is from here. from __future__ import...

ValueError: Input shape error with Keras DQN agent

I am having a small error using the DQN RL agent from Keras. I have created my own OpenAI gym environment that outputs a numpy array of size 1 for the observation. Yet when I call the fit function...

Scope in Python subplot similar to MATLAB's stackedplot()

Is there a plot function available in Python that is same as MATLAB's stackedplot()? stackedplot() in MATLAB can line plot several variables with the same X axis and are stacked vertically....

How to plot a Plotly Isosurface with non-analytic data?

I'm taking some data from a weather model and trying to plot it as an isosurface inside of Plotly, but I'm getting a blank graph each time without any error messages. I'm new to plotly so this...

Error using Keras ImageDataGenerator with custom train_step in subclassed model

I am trying to code a knowledge distillation model using keras. I started from keras example here. In order to train the model the train_step and test_step method were overwritten. Unlike keras...

TypeError: fit() missing 1 required positional argument: 'y' while GridSearching CNN

train_dataset = train.flow_from_directory('/kaggle/input/temp-frames/frames/train', target_size=(64,64), batch_size=256, class_mode='categorical') validation_dataset =...

'TypeError: Expected a message Descriptor, got Descriptor' when trying to import keras

I was trying to import this from tensorflow.keras import Sequential from tensorflow.keras.layers import Conv2D, Flatten, Dense from tensorflow.keras.callbacks import EarlyStopping I got this...

learning_rate is not a legal parameter

I am trying to test my model by implementing GridSearchCV. But I cannot seem to add learning rate and momentum as parameters in GridSearch. Whenever I try to execute the code by adding those, I am...

Facing problems when training a Convolutional Neural Network (CNN) using TPU when using ImageDataGenerator class for Data Augmentation of Images?

Recently I have been training a CNN i.e. AlexNet for classifying Brain MRI images into four classes but when I am training it on CPU or GPUs on my Google Colab Runtime it is taking a lot of time...

How to flatten list of dictionaries in multiple columns of pandas dataframe

I have a dataframe and each record stores a list of dictionaries like this: row prodect_id recommend_info 0 XQ002 [{"recommend_key":"XXX567","recommend_point":50}, ...

tf.keras.models.save_model not saving the probabilistic_model

System information Have I written custom code (as opposed to using a stock example script provided in TensorFlow): Yes OS Platform and Distribution (e.g., Linux Ubuntu 16.04): Ubuntu 20.04...

Best way to flatten and remap ORM to Pydantic Model

I am using Pydantic with FastApi to output ORM data into JSON. I would like to flatten and remap the ORM model to eliminate an unnecessary level in the JSON. Here's a simplified example to...

How to improve ArUco marker tracking on mp4 video footage

I am using ArUco markers to track two points in my research project experimental setup. One marker is on the base of a robot, and the other is on the robot tip. The footage is recorded using...

Airflow set python library versions to improve build speed

It used to take ~5 minutes for our Airflow deployment's docker image to build, and all of a sudden it is taking over an hour. With that said we haven't had to rebuild our image in a few months, so...