HomePython error “ImportError: No module named” Why? How? Command-Line? [Solved2021]

Python error “ImportError: No module named” Why? How? Command-Line? [Solved2021]

In today’s Tech World when Artificial intelligence and machine learning taking place everybody wants to join this and for that everyone wants to learn python, and this is the craze for Python is increasing everyone faces different problems while running any python code, Most Commonly ModuleNotFoundError: No module named.

Know Everything About Pip Error, Get Solved Every Python Problem. we are trying to list as many python errors as possible

Why this error modulenotfounderror-no-module-named-error?

This is the most common error face by any python programmer and a very simple and very straight forward answer to this question is that you don’t have that package install on your PC or in your virtual environment where you are executing this or trying to run this Python program.

This mainly occurs when you try to run a program or Python file that you have downloaded or cloned from GitHub or any online repository.

This occurs with me when I am trying to copy the code from stack overflow and the package that I have imported in the code is not installed in my I system.

So this is why the no module error occurs and the very simple way to solve this error is to install the package that we are importing while writing the code.

How to solve this no module named error?

The most common errors faced by most python beginners module not found error and not only beginner lot of intermediate level programmer also face this problem.

No doubt Python is the easiest language for programming but it is case sensitive and has several modules so if you miss spell a single word, you end up installing a wrong module that of no use to your current program that you want to run.

So this module not found error is very common among beginner-intermediate programmer or sometimes advanced level programmer also face this problem but this is not a big issue, not the kind of bug that take hours searching for looking out a single Bug.

The simple and short answer fore way to find out the solution to this kind of problem is to

Just copy the error from your command line and paste it in your browser and Google will do its magic you can get a result and solution for this no module named error in just seconds.

The answer may be on StackOverflow or a website like us.

Command for updating the module name

  1. To install the latest version of a package: >>
  2. pip install'PackageName'
  3. To install a specific version, type the package name followed by the required version:
  4. >>pip install 'PackageName==1.1'

How to use the correct pip?

The easiest way is using python -m pip

How to solve no module name error using terminal?

When you are trying to run a Python program that you have downloaded or clone from somewhere else as this Python program content for using some of the libraries that are not already installed on your PC you get the following error and there is a very simple method to get rid of this bug is to install that package and after that try to run that again

now after installing the package you can easily execute the program without any error.

so this no module name error can easily be get solved if you know the command to install that specific package that is giving you this no module name error.

and if you are a Python programmer then you definitely know this command but then also you need to know the package name because the name should be exact same there are hundreds of thousands of package if you miss pill while installing you end up installing the wrong package and do after installing through command line also so you get the same error because actually, you haven’t installed the original package that you are trying to use in your Python program.

Show the simple command for or installing any Python package is

Pip install package name

How to updates module

Many time you face similar kind of error after installing the library or package that I will not available in your PC in the first place but then also if you are not able to run the program and getting the similar kind of error you need to check for the package version I need to update that package for that similar version that your program is using.

After installing the package if you still facing the error please means that while updating the package the author of that packaging change some function of that package and this new updated function is available on the updated version of the package so if you have installed an older version then that function is not available in that package and that’s why you are getting that error do you have to install the package using PIP command.

Updating the package according to your program is quite simple if you know which package your program is using you can easily put that package name followed by the version number in the command line and you get that version package install on your PC.

How to see the list of libraries used by any Python program?

I have installed the package but still facing the similar no module name problem

Why after installing the package I’m getting the same error?

So if you are facing the same mirror of no module name then there may be the following reason check for each one of the below reasons listed.

There are tons of python libraries available and continuously increasing so a single Missspell in letters and installing the wrong package and gives you the same error because you have not installed the actual package that your program is using.

Another reason for getting that error is that you have installed that package for a different version of python please check if you are using python2 for python3 there are different commands for installing a package for Python 2 and Python 3.

Command for installing package if you are using Python 2

Pip install

Command for installing package if you are using Python 3 or above.

Pip3 install PackageName

Did you install multiple versions of package?

pip uninstall -y <your-package-name>

pip uninstall -y <your-package-name>

pip uninstall -y <your-package-name> #

Until the system prompts that the package is not installed pip install <your-package-name>

How to upgrade Pip?

But first you need to know the Python Version and the Pip VErsion You are using and in which Python version you have written the Python Program.

To install Python in Windows Check Our Post at https://phoenixnap.com/kb/install-pip-windows

Or Follow the

$ sudo apt update
$ sudo apt install python3-pip

So for to Check the PIP Version Use:

$ pip --version
 pip 9.0.1 from /home/myhomedir/myvirtualenvdir/lib/python2.7/dist-packages (python 2.7)
$ pip3 --version
 pip 9.0.1 from /home/myhomedir/myvirtualenvdir/lib/python3.4/site-packages (python 3.4)

How to Upgrade the Python Library?

pip is just a PyPI package like any other; you could use it to upgrade itself the same way you would upgrade any package:

pip install --upgrade pip
pip3 install --upgrade pip

On Windows the recommended command is:

python -m pip install --upgrade pip
python3 -m pip install --upgrade pip

For Virtual Environment:

curl https://bootstrap.pypa.io/get-pip.py | python -

Or if you want to install it box wide you will need

curl https://bootstrap.pypa.io/get-pip.py | sudo python -

How to install a specific version?

Installing specific version of any python package is quite simple but for that you need to know which version are available and which version your python program is using so you can install the proper version and run your code see the command given below:

pip install 'PackageName==1.1'

Documentation of module name

If you want to use any package in your program you just need to know its functions and how that library works? Libraries are made for using the predefined function written by the corresponding library author.

So that it can help other programmers to easily write a program using these predefined codes in our program.

And For that you need to know the actual documentation that the library author writes, we can write different functions by learning this documentation.
You can easily use any function that has been written by the author in any specific libraries and use that according to our use.

For Any Other Documentation Visit

https://readthedocs.org/

Get Documentation of Any Python Library

How to install python on Linux

it comes preinstalled but if you want you can install it in any Linux Ubuntu System as follows

How to install Python on Windows

refer: https://github.com/Akuli/python-tutorial/blob/master/basics/installing-python.md

How to install Python on debian or on parrot OS

If you are using any Debian or Linux version python come installed videos internal repositories need python to work flawlessly so I using for installing the Linux distro it already comes with Python so you don’t need to install Python forcefully in your system.

But if you still want to install an older version on your version of Python you can do it using the command line.

How to install Python 3.9 in Debian parrot OS system?

Installing python is as simple as defining a variable in Python you can easily install any Python version using the official Python website through the command line.

  1. To install Python 3.9 in any Linux distro follow the following steps.

Install Supporting Software/Repositories using:

sudo apt install software-properties-common

Add Deadsnakes PPA

sudo add-apt-repository ppa:deadsnakes/ppa
  1. Use Update Command to UPdate the System data for Smooth Use
sudo apt update
  1. Supporting Software
sudo apt install build-essential zlib1g-dev libncurses5-dev libgdbm-dev libnss3-dev libssl-dev libreadline-dev libffi-dev wget
  1. Full download compress file from the official website or click here. Try to Install the Latest Stable version
cd /tmp
wget https://www.python.org/ftp/python/3.7.5/Python-3.7.5.tgz
  1. Unzip these downloaded compress files.
tar –xf Python-3.8.3.tgz

Open a terminal in this using “cd” command or by right-clicking in your download a file and from there run terminal.

cd python-3.8.3
./configure ––enable–optimizations

Install a Second Instance of Python (recommended)

To create a second installation of Python 3.835, in addition to your current Python installation, enter the following:

sudo make altinstall

Check the Version install

python3 ––version

Also Check if you install python3.7 or python 3.8

python3.7 ––version
python3.8 ––version

If you are facing this no module name error in probably you are a beginner in this Python world. We have a gift for you

So for you, we have a gift, Indian gift is some of the most commonly used python code that everyone from beginner to intermediate and to intermediate to advanced level programmer use in their program every now and then so these are the few python codes that make your life easier and learn that.

Go through it understand it truly tries to write it try to implement it using your own logic and build a strong base on which you can learn advanced Python topics like functions and object-oriented programming.

Commonly used python code

# Filter a list

#filter out empty strings in a sting list list = [x for x in list if x.strip()!=”]

# Read file line by line

with open(“/path/to/file”) as f: for line in f: print line

# Write file line by line

f = open(“/path/tofile”, ‘w’) for e in aList: f.write(e + “\n“) f.close()

# Regular expression finding

sentence = “this is a test, not testing.” it = re.finditer(‘\\btest\\b’, sentence) for match in it: print “match position: ” + str(match.start()) +”-“+ str(match.end())

# Regular expression search

m = re.search(‘\d+-\d+’, line) #search 123-123 like strings if m: current = m.group(0)

# Query database

db = MySQLdb.connect(“localhost”,”username”,”password”,”dbname”) cursor = db.cursor() sql = “select Column1,Column2 from Table1” cursor.execute(sql) results = cursor.fetchall()   for row in results: print row[0]+row[1]   db.close()

# Connet a list with a specified separator

theList = [“a”,”b”,”c”] joinedString = “,”.join(theList)

# Filter out duplicate elements

targetList = list(set(targetList))

# Filter out empty strings from a list of strings

targetList = [v for v in targetList if not v.strip()==”] # or targetList = filter(lambda x: len(x)>0, targetList)

# Add a list to another list

anotherList.extend(aList)

# Iterate a dictionary

for k,v in aDict.iteritems(): print k+v

# Check if any element of a string list appears in a target string

if any(x in targetString for x in aList): print “true”

For More Common python Code refer following github and other below site:

Advance Stuff:

  1. Handy data types
  2. Advanced stuff with functions
  3. Magic methods
  4. Iterables, iterators and generators

Apparently, not all Python code idioms are shown above. I would appreciate if you can add more in your comment.

Free Python programming course for beginners

Learn computational thinking and jump start your programming career

How to move ahead in the race of programming

This Article is Written After Referring Tons of Other Article and that Why We think this is the best thing that you are going through for this kind of problem. Still, if You Want then You can Go through Them, check the below links

Reference

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