Installing Flask - Visual Walkthrough

Concept Flow - Installing Flask

Open Terminal

↓

Check Python Installed

Yes↓

Run pip install flask

↓

Wait for Installation

↓

Verify Installation

Yes↓

Flask Ready to Use

This flow shows the steps to install Flask: open terminal, check Python, run pip install, wait, verify, then Flask is ready.

Execution Sample

Flask

python -m pip install flask
flask --version

This installs Flask using pip and then checks the installed Flask version.

Execution Table

Step	Action	Command/Check	Result
1	Open terminal	N/A	Terminal ready for commands
2	Check Python installed	python --version	Python 3.x.x found
3	Run Flask install	python -m pip install flask	Flask packages downloaded and installed
4	Wait for installation	N/A	Installation completes without errors
5	Verify Flask	flask --version	Flask version displayed
6	Finish	N/A	Flask ready to use in projects

💡 Installation finished successfully and Flask version confirmed

Variable Tracker

Variable	Start	After Step 3	After Step 5	Final
Flask Installed	No	Installing...	Yes	Yes
Python Available	Unknown	Yes	Yes	Yes

Key Moments - 2 Insights

What if the command 'python' is not recognized in step 2?

It means Python is not installed or not added to system PATH. You must install Python first before installing Flask. See step 2 in execution_table.

Why do we use 'python -m pip install flask' instead of just 'pip install flask'?

Using 'python -m pip' ensures pip runs with the correct Python version. This avoids confusion if multiple Python versions exist. Refer to step 3 in execution_table.

Visual Quiz - 3 Questions

Look at the execution table, what is the result after running 'flask --version'?

A Python version displayed

B Flask version displayed

C Error: command not found

D Installation starts

💡 Hint

Check step 5 in the execution_table under Result column

At which step does the installation process confirm Flask is ready to use?

A Step 3

B Step 5

C Step 6

D Step 2

💡 Hint

Look at the Action and Result columns for final confirmation in execution_table

If Python is not installed, what will happen at step 2?

A 'python --version' command fails

B Terminal opens successfully

C Flask installs anyway

D Flask version displays

💡 Hint

Refer to key_moments about checking Python installation at step 2

Concept Snapshot

Installing Flask:
1. Open terminal
2. Confirm Python installed (python --version)
3. Run 'python -m pip install flask'
4. Wait for install to finish
5. Verify with 'flask --version'
Flask is then ready to use.

Full Transcript

To install Flask, first open your terminal. Check if Python is installed by running 'python --version'. If Python is available, run 'python -m pip install flask' to install Flask. Wait until the installation finishes without errors. Finally, verify the installation by running 'flask --version' which shows the installed Flask version. If all steps succeed, Flask is ready to use in your projects.