I’ve been using python for a long time. python’s system and subprocess methods can take shell=True attibute to spawn an intermediate process setting up env vars. before the command runs. I’ve be using Java back and forth and using Runtime.exec() to execute shell command. I find difficulty to…
Tag: java
Loading Python 2D ndarray into Android for inference on TFLite
I’d like to test inference on a TensorFlow Lite model I’ve loaded into an Android project. I have some inputs generated in a Python environment I’d like to save to a file, load into my Android app and use for TFLite inference. My inputs are somewhat large, one example is: <class ‘nu…
Sending Protocol Buffer encoded message from Python Server to Java Client
I’m writing a little server that uses protocol buffer to encode some data. TCP Socket is opened between Android Client and Python Server Android Client sends string for processing as normal newline delimited utf-8. Python Server does some processing to generate a response, which gives an Array of Int Ar…
Pyjnius custom java method returning ‘JavaException: Unable to find a None Method’ works after Public Static
So I needed to read a ByteArray from the InputStream in Android. Therefore I used this custom method in java in a kivy App using pyjnius for the same reason as stated in the link. I placed the ReadInput.java file in this directory: ~/Build_Environ/.buildozer/android/platform/build/dists/JniusPrintBluetoothApp…
Fernet class encryption in python and decryption in java not working
I am trying to write a code for encryption in Python and decryption in Java but I am getting an error. I am using cryptography.fernet in python to encrypt a file and when I use Fernet Java for decryption it shows an error. Here is my python code: Here is my java code: The error in Java that I get
Load Machine Learning sklearn models (RandomForestClassifier) through java and send as argument to a function in python file
I have a ML model which is trained as saved as pickle file, Randomforestclassifier.pkl. I want to load this one time using java and then execute my “prediction” part code which is written python. So my workflow is like: Read Randomforestclassifier.pkl file (one time) Send this model as input to fu…
Google Foobar Challenge 3 – Find the Access Codes
Find the Access Codes Write a function answer(l) that takes a list of positive integers l and counts the number of “lucky triples” of (lst[i], lst[j], lst[k]) where i < j < k. The length of l is between 2 and 2000 inclusive. The elements of l are between 1 and 999999 inclusive. The answer fi…
How to run Spark code in Airflow?
Hello people of the Earth! I’m using Airflow to schedule and run Spark tasks. All I found by this time is python DAGs that Airflow can manage. DAG example: The problem is I’m not good in Python code and have some tasks written in Java. My question is how to run Spark Java jar in python DAG? Or may…
Is there a Java equivalent of Python’s ‘enumerate’ function?
In Python, the enumerate function allows you to iterate over a sequence of (index, value) pairs. For example: Is there any way of doing this in Java? Answer For collections that implement the List interface, you can call the listIterator() method to get a ListIterator. The iterator has (amongst others) two me…
about Speed: Python VS Java
Just curious about speed of Python and Java.. Intuitively, Python should be much slower than java, but I want to know more…Could anybody give me more? or introduce some nice post to read? Answer The current standard implementation of Python (CPython) is slower than Java because the standard CPython impl…