How to Create a Bar Chart in Python using Matplotlib?
To create a single or multiple bar chart, the “plt.bar()” function is used in Python. The “plt.barh()” function is also used to create the horizontal bar chart.
To create a single or multiple bar chart, the “plt.bar()” function is used in Python. The “plt.barh()” function is also used to create the horizontal bar chart.
To convert a list to pandas DataFrame, the “pd.DataFrame()” function is used in Python. To convert a list to DataFrame, the zip() function can also be used.
To install any package in Python using “pip”, you need to execute the “pip install package_name” command from the CMD (command prompt terminal).
To plot the histogram, the “plt.hist()” function is used in Python. It can be modified using the “plt.hist()” attributes and the “plt.style.use()” function.
Python uses the “plot()” function of the matplotlib library to plot a line chart. The multiple-line chart is also plotted using the matplotlib function.
To upgrade the pip or install the latest version of pip in windows, the “python -m pip install –upgrade pip” command is used in Python.
The “tkinter” ModuleNotFoundError can be fixed in windows by installing the “tkinter” module at the time of Python installation.
Linux offers the “pdftk” and “ghostscript” command-line tools to merge multiple or all PDF files into a single file on Ubuntu.
The nmap command scans the IP addresses on Linux to get their information. We can scan the range of IP addresses with the nmap.
Linux offers the “cat”, “less”, “more”, “head”, and “tail” commands to display the contents of a text file on the Linux command line.
Linux offers the “sestatus”, “getenforce” commands, and “etc/selinux/config” files to check whether SELinux is enabled or disabled.
Linux offers the “/etc/resolv.conf” file and the “Network Settings” in CLI and GUI methods to change the DNS server IP address in the system.
Linux offers the “smbpasswd” command with “-a” and “-x” options to add and delete samba users in Linux. For this, it is necessary to install the “samba” package.
Linux offers the “sysctl.conf” configuration file to permanently and temporarily disable the IPv6 services on Ubuntu 22.04 Jammy Jellyfish Linux.
To install an NFS Server on Ubuntu, run the command “sudo apt install nfs-kernel-server -y”. Read this post to learn the configuration of the NFS.
Linux offers the built-in “OpenSSL” library to create the “.crt” file that establishes a secure connection between a server and a web browser.
The crontab offers the “MAILTO” parameter to set the mail address to send notifications. Once the job is executed, an email will be sent to the address.
Linux offers the “free”, “top”, “vmstat”, and “cat /proc/meminfo” commands and “System Monitor” application (GUI) to check the available memory.
The “yum –downloadonly [options] [package]” command downloads a package without installing them in CentOS. Also, specify the location to download the package.
Linux offers the “tar” command with the “tvf” option to view the contents of a tar file. It displays the “file names”, “date and time”, and “file location”.
Linux offers the “lsusb” command to display a list of all USB devices connected to the system, including the device’s vendor ID, product ID, and device class.
Linux offers the “scp” command to copy/transfer files between remote systems. Also, you can copy a file from the local to a remote machine and vice versa.
Linux offers the “curl -A” option, the “.curlrc” file, and the “CURL_USER_AGENT” environment variable to set the user agent.
Linux offers the “curl” command to make REST API requests to the server. Different HTTP methods, GET, POST, PUT and DELETE, are used to manage data.
Linux offers the “nemo” command to install the Nemo file manager in the system. Also, you can configure it as a default and perform many actions.
Linux offers the “fallocate” command to create a swap file in the operating system by specifying the file name and desired size.
Linux offers the “nmap” command to scan the subnet by displaying the connected devices over the IP addresses in the same network.
Linux offers the “hexdump” command to visualize the contents of a file in a hexadecimal and ASCII, canonical, and custom format string.
To install the GNOME desktop environment and minimal version, run the “ubuntu-gnome-desktop” and “ubuntu-desktop-minimal” commands in the system.
To install the GNOME Desktop environment on Debian 11, use the command “sudo apt install gnome/stable” or “sudo tasksel install desktop gnome–desktop”.
To see all the IP addresses on your network, you can use the arp and nmap commands in Linux. Also, the third-party application, AngryIP, can be used.
The docker “run” command starts a new container from a docker image. The users can set up the new container, the password, and the volume of the container.
To kill a process in Linux, the “kill”, “kilall”, “pkill”, “xkill” and “top” commands are used.
They require the process name or id to kill the process.
To install MySQL on CentOS 7, the “mysql-server” package is required after enabling the repository of MySQL 8.0. It installs all dependencies in the system.
To reload the changes to Systemd unit files, execute the “systemctl daemon-reload” command. Also, you can reload the specific unit files in the system.
To restart the network interface on Linux, we must restart the service associated with the network manager. Read this post to learn more about it.
To change the GRUB timeout in Linux, open the “/etc/default/grub” configuration file and set the “GRUB_TIMEOUT” value in seconds.
The boot loader loads the OS into memory and starts it. It is responsible for initializing the system, performing hardware tests, and giving control to the OS.
The Python traceback most recent call last provides information related to the error, such as the name of the error, type of error, etc., in a program.
In Python, the “list.index()” function is used to get the index of items from the complete list or a range of indexes in the list.
The stated error is resolved by removing the inconsistent tabs or spaces from the code and using the same indent level for the identical code block.
To add days to date, the “timedelta()” class of the “datetime” module and “pd.Dateoffset()” function of the panda’s module are used in Python.
To convert the Datetime to Epoch, the “timegm()” function, “timestamp()” function, and “total_seconds()” are used in Python.
To count the occurrences of a character in a string, the count() function, for loop, re.findall() function, lambda expression, etc., are used in Python.
To print an object’s attributes, different methods are used in Python, such as the “dir()” function, “vars()” function, and “inspect.getmembers()” function.
A “callback function” is a defined function that is passed as a parameter value to another function. It is called at a specific point in the main function.
To create the string builder equivalent, the “join()” function, the “+=” operator, string concatenation, and the IO module are used in Python.
In Python, the Modulo operator “%” divides the two numbers and retrieves the remainder as output. It is also used for string formatting.
To write pandas DataFrame to single or multiple excel sheets, the “df.to_excel()” function and the “Excel Writer” class are used in Python.
To write JSON to file, the “json.dumps()” and “json.dump()” functions are used along with the “open()” function in Python.
To sort a set, the “sorted()” and the “list.sort()” functions are used in Python. These functions sort the set elements and retrieve them as a list.
To set the single and multiple columns as Index in Pandas DataFrame, the “set_index()” function and “index” attribute are used in Python.
To replace multiple characters in a string, the “replace()”, “re.sub()” and the “translate()” along with the “maketrans()” functions are used in Python.
To overwrite a file in Python, the “open()” method, “seek() and truncate()”, “re.sub()”, “os.remove()”, “replace()”, and “fileinput()” methods are used.
To open all the files in the directory, the “os.listdir()”, “glob.glob()”, “os.walk()”, “os.scandir()”, “pathlib.path()” functions are used in Python.
To convert the “CSV” into a dictionary, the “csv.DictReader()” function, the “pd.to_dict()” function, and the “List Comprehension” method are used in Python.
To calculate the cosine similarity, the functions of the “Numpy”, “scipy”, and the “scikit-learn” module are used in Python.
To get the index of pandas DataFrame, the “df.index” attribute, “tolist()” Function, “index.values”, and “.axes” attributes are used in Python.
To show or display an image, we can use the “Image.open()” and “Image.show()” functions of the “Pillow” module in Python.
To find the inverse of the matrix, the “numpy.linalg.inv()” function, “numpy.matrix” class, and the “scipy.linalg.inv()” function is used in Python.
To convert float to string, the “str()” function, “f-string” method, “repr()”, and “format()” functions, Numpy, and List Comprehension, are used in Python.
To convert binary to integer, the “int()” function, the “bitstring” module, and the “f-string” formatting method are used in Python.
The “update()” function, “for loop”, “unpacking operator (**)”, and “ | Operator” are used in Python to add a dictionary to another dictionary.
To convert hex string to integer, the built-in “int()” function and the “ast.literal_eval()” function of the “ast” module is used in Python.
Top 9 User-Friendly Arch-based Linux distributions recommended for 2023 are Manjaro, Anarchy Linux, Garuda Linux, EndeavourOS, and many more.
The “sshfs” command mounts the remote directory by specifying the local mount point. This command requires the “username” and “hostname” of the remote machine.
To use the script command in Linux, we can run the “script” command. This command is used to record the activity of the shell.
To add the entries in the syslog file, use the logger command in Linux by following the command syntax “logger [options] [log]”.
To unban an IP in fail2ban, the “fail2ban-client” utility is used by specifying the banned IP Address in IP List. This utility prevents unauthorized activity.
Linux offers the “cat” command to display the “MOTD” in the terminal. Also, users can display the custom MOTD after accessing the /etc/motd file.