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“ssl module in Python is not available” when installing package with pip3

Step by step guide to install Python 3.6 and pip3 in Ubuntu Install the necessary packages for Python and ssl: $ sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev Download and unzip “Python-3.6.8.tar.xz” from https://www.python.org/ftp/python/ into your home directory. Open terminal in that directory and run: $ ./configure Build and install: $ make && sudo make install … Read more

Conda version pip install -r requirements.txt –target ./lib

You can run conda install –file requirements.txt instead of the loop, but there is no target directory in conda install. conda install installs a list of packages into a specified conda environment.

How do I reverse a C++ vector?

There’s a function std::reverse in the algorithm header for this purpose.

npm ERR cb() never called

If you have npm version 5 or above, try this first: Otherwise: My node and npm versions are:

“Exception in thread “main” java.lang.IndexOutOfBoundsException: Index: 0, Size: 0″ with ArrayList?

“Exception in thread “main” java.lang.IndexOutOfBoundsException: Index: 0, Size: 0″ is the main error I get when I compile this method: How can I fix this?

How to use SQLite in Visual Studio 2017?

Add SQLite/SQL Server Compact Toolbox from In Visual Studio 2017 Community. Goto Tools – Extensions and Updates – click Online. Search for Sqlite. You should see Sqlite compact toolbox. Click download . Restart visual studio.

Remove duplicated rows

just isolate your data frame to the columns you need, then use the unique function 😀

How to make a class property?

Here’s how I would do this: The setter didn’t work at the time we call Bar.bar, because we are calling TypeOfBar.bar.__set__, which is not Bar.bar.__set__. Adding a metaclass definition solves this:

python re.split() to split by spaces, commas, and periods, but not in cases like 1,000 or 1.50

Use a negative lookahead and a negative lookbehind: In other words, you always split by \s (whitespace), and only split by commas and periods if they are not followed (?!\d) or preceded (?<!\d) by a digit. DEMO. EDIT: As per @verdesmarald comment, you may want to use the following instead: This will split “1.2,a,5” into [“1.2”, “a”, “5”]. DEMO.

ImportError: No module named psycopg2

Step 1: Install the dependencies Step 2: Run this command in your virtualenv

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