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Mastering Development

Paramiko – expected str, bytes or os.PathLike object, not SFTPFile

I have a direct connection to the server – the connection works without any problem and I can display files from the selected directory without any major problem. There are different files on the server, I have several functions to read them and below here is a piece of code concerning .pdf files – I […]

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Mastering Development

Reverse search an image in Yandex Images using Python

I’m interested in automatizing reverse image search. Yandex in particular is great for busting catfishes, even better than Google Images. So, consider this Python code: import requests import webbrowser try: filePath = “C:\\path\\whateverThisIs.png” searchUrl = ‘https://yandex.ru/images/’ multipart = {‘encoded_image’: (filePath, open(filePath, ‘rb’)), ‘image_content’: ”} response = requests.post(searchUrl, files=multipart, allow_redirects=False) #fetchUrl = response.headers[‘Location’] print(response) print(dir(response)) print(response.content) […]

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User Help

Merging Generated PDF Pages Using PyPDF [migrated]

currently working on a script which automatically fills up a fillable pdf file. Current challenge is that right now, all generated scripts are stored on multiple pdf files and what I wanted to do is to have them merged into a single PDF file instead of generating multiple files. This is the current script which […]

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Ask Chemistry

Industrial production of alkali metals

My professor says that $\ce{Li}$ and $\ce{Na}$ are produced by electrolysis, while $\ce{K, Rb}$, and $\ce{Cs}$ are made via the reaction $\ce{Na + MCl -> NaCl + M}$, where $\ce{M = K, Cs, Rb}$. I don’t understand how the reaction $\ce{Na + MCl -> NaCl + M}$ can take place, given the reduction potentials of […]

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Mastering Development

deploying ruby-rails + react-js on heroku error

I am having trouble deploying an app I made with ruby on rails and react.js on heroku. Has anyone ran into these errors while deploying? I am completely stuck and hopeless remote: Usage: npm <command> remote: remote: where <command> is one of: remote: access, adduser, audit, bin, bugs, c, cache, ci, cit, remote: clean-install, clean-install-test, […]

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Development

Create a Quick Expense with an Image with ‘500 Error’

It could be used curl to Create a Quick Expense with an Image(create-quick-expense-image) , but when it was executed with python, there was a “500 – Internal Server Error” problem. I also tried to save file ‘Image_1.jpg’ as a Base64 encoded image, it was also “500 – Internal Server Error”. Is there any thing wrong […]

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C++ Development

How do I correctly setup the multipart formdata with libcurl (in C++) to upload a binary file

To provide a little background. I am not very experienced with Ethernet communications so I apologize in advance for that. I’m working on a project where I need to figure out how to upload a binary file. I’m trying to upload a large binary file (~34MB) to an embedded device. I have a python code […]

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Development Python

Writing to and reading from the file (log file on raspberry-pi) Python

File: ‘/dev/board/serial_xxx‘ (raspberry-pi) – LOG FILE (at the moment of opening the file is constantly filled with logs) Python v. – 3.5 I made the following attempts: 1) In this case writing is correctly (reading not) filename = ‘/dev/board/serial_xxx’ pattern = re.compile(r”\(W\w+M\w+\)\s(D\w+)”, re.IGNORECASE) lines = [] linenum = 0 with open(filename, ‘r+b’, buffering=0) as my_file: […]

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Development React

issue installing react native expo with npm install -g expo-cli

I was able to install and run react-native but when I tried to install react native expo I got some errors this is my Expo installation npm install -g expo-cli Microsoft Windows [Version 10.0.16299.125] (c) 2017 Microsoft Corporation. All rights reserved. C:\Users\admin>npm uninstall -g expo-cli up to date in 0.043s C:\Users\admin>npm install -g expo-cli npm […]

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Development

Python poster package uses file’s path as file’s name

I try uploading a file using the following code (which has been summarized). On the server-side, when I check the name of the received file, I see that it is set to the file’s path on the client’s system. Currently, the poster library takes the file_path parameter that I entered (e.g.: file_path=~/user/data.csv), and sends it […]