how to install pip3 on ubuntu code example

Example 1: ubuntu pip3

sudo apt-get -y install python3-pip

Example 2: how to download pip3 in kali linux

sudo apt-get install python3-pip

Example 3: install pip3 linux

sudo apt install python3-pip

on Fedora
sudo yum install python3-pip

Example 4: how to install tar.gz in ubuntu

Download the desired .tar.gz or (.tar.bz2) file
Open Terminal
Extract the .tar.gz or (.tar.bz2) file with the following commands
tar xvzf PACKAGENAME.tar.gz
tar xvjf PACKAGENAME.tar.bz2
Navigate to the extracted folder using cd command
cd PACKAGENAME
Now run the following command to install the tarball
./configure
make
sudo make install

Example 5: ubuntu use pip as pip3

alias pip=pip3

Example 6: install pybind ubuntu

# Some prerequisites (but not all of them)
apt-get install cmake
pip3 install pytest

# Clone, build and install 
git clone https://github.com/pybind/pybind11.git 
cd pybind11 
mkdir build 
cd build 
cmake .. 
make install