How to install leveldb on mac os x

I am trying to use level db in my python project. I zeroed in on python binding PlyVel http://plyvel.readthedocs.org/en/latest/installation.html, which seems to be better maintained and documented...

electrum server install ImportError

I have a trouble when i installed the electrum server.The electrum server install document reference(https://github.com/spesmilo/electrum-server/blob/master/HOWTO.md).everything has been done...

Install cffi for python-for-android

I'm trying to develop an android app with kivy+scrapy(or mechanize) using buildozer. When I add scrapy/mechanize in required field in buildozer.spec file and run buildozer android debug, pip...

Unable to get Buildozer to work in ubuntu - "fatal error: arm-linux-gnueabi/python2.7/pyconfig.h: No such file or directory"

I am trying to build a very basic Hello World Android application using kivy. Source code: import kivy kivy.require('1.8.0') # update with your current version from kivy.app import App from...

Building apk file with buildozer error Command failed: ./distribute.sh -m "kivy" -d

I'm making an apk from python and kivy for the first time so if this is some newbie question sorry. I want to build app for android from python and kivy scrips using buildozer tool. After few...

Installing plyvel with pip

I am getting this error when trying to install plyvel : Running setup.py install for plyvel Complete output from command /home/eytan/.virtualenvs/env/bin/python -c "import setuptools,...

Python LevelDB (plyvel) - Storing image bytes and a dictionary in the same key

I have a LevelDB which stores image bytes. I want to save a dictionary containing metadata information about the image in the same LevelDB under the same key. So far it's working for me but i...

Can't remove lock from python leveldb database

I'm working with a leveldb database (the leveldb wrapper, not plyvel); I ran a few test Put/Get/Delete operations on the database and everything was okay. (If it's relevant, I was accessing the...

Compilation error using buildozer. NDK location issue

I have buildozer installed but I can't compile an apk. I am on windows so I have an Ubuntu 64 bits VM with oracle VM. I donwload and install again cython, and configure several previous errors to...

Python, Kivy, Buildozer: error using python-firebase/requests

[python = 2.7] I recently started to use kivy(newest version) to develop an app for android. For this I use buildozer(newest version) to create the apk file. Now everything works fine on my...

Buildozer - requirement pysftp

I'm able to use pysftp on kivy, but I can't package my app using this requirement. Using buildozer, in the message says I'm using pip 8.1.1 and there is another version, 8.1.2. But I checked my...

Python dictionary vs. database

In my brief experience, the Python dict data structure slows down the program execution as the number of keys reach few tens of thousands. I need a fast key-value store to handle up to a million...

Can you *read* leveldb data without the proper comparator?

I'm trying to access leveldbs generated by Chrome storing indexeddbs. I get keys and values. But they are either in an unknown encoding - I've tried many ways to detect them - or they are...

Installing pip3 packages. Getting "command 'clang' failed with exit status 1"

I'm following this guide: https://freedomnode.com/blog/69/how-to-install-an-electrum-server-using-full-bitcoin-node-and-electrumx Currently stuck at this step, to install the pip3 deps Install...

Loading Images from a LevelDB in python 2.7

I am facing a problem with python (2.7) "strings". I am using a LevelDB and want to load an image from the database and save it to disk (e.g., as test.jpeg). To access the db I am using the plyvel...

Can't build Kivy project with buildozer and python3crystax

Sorry for possible stupid question, but today I spent ~5 hours trying to build simple apk with Python3, Buildozer and Crystax NDK. I used Buildozer VM, downloaded Crystax ndk 10.3.2, created...

plyvel install on windows

I am doing data analysis on Ethereum blockchain data. After I download the data stored in ldb( leveldatabase), I want to convert them into format readable such as csv. So I install the plyvel...

How do I install libleveldb-dev on windows for Python?

How to install libleveldb-dev (leveldb development libraries) on windows? I need this to be downloaded so I can install plyvel. Thank you in advance I hope someone is familiar with this...

No module named 'rocksdb' on Mac OSX Python3

I have installed rocksdb on my mac using the [official documentation][1] and then ran a command pip3 install python-rocksdb. However, when I try to import rocksdb, I face a ModuleNotFoundError on...

LevelDB for 100s of millions entries

What are the top factors to consider when tuning inserts for a LevelDB store? I'm inserting 500M+ records in the form: key="rs1234576543" very predictable structure. rs<1+...

Trouble finding memory leak (tracemalloc/objgraph/gc not helping)

I have a network process that communicates over TCP collecting data, deserialising it and finally storing parts in a LevelDB key/value store (via Plyvel). Slowly over time it will consume all...

pip3 installation error with the iconservice package

I am trying to $ sudo pip3 install iconservice as instructed in this tutorial: https://medium.com/@2infiniti/creating-icon-dapp-from-a-z-part-1-tools-environment-dd56f8dfc905. I'm running OS-X. I...

Optimize a nested for loop in Python

I have data stored as key value pairs in a leveldb database. The values are the laser vector embedding of sentences and keys are intents of those sentences. When a new sentence is inputted, I...

Permission denied while connecting to upstream in Nginx with Gunicorn

Following this tutorial, I tried deploying a Flask app with Nginx and Gunicorn. Starting the app with Gunicorn alone and connecting to it works fine. But, after configuring a Unicorn instance to...