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To fix the error, install the flask library using “ pip install flask” or “ pip3 install flask” in your operating system’s shell or terminal first. ModuleNotFoundError: No module named 'flask'īecause you haven’t installed the package, Python raises a ModuleNotFoundError: No module named 'flask'. Say you try to import the flask package into your Python script without installing it first: import flask How to download and install python on mac how to#How to Resolve ModuleNotFoundError: No module named ‘flask’? ![]() This automatically installs the flask library when the cell is first executed. This works for the flask library too: !pip install my_package To install any package in a Jupyter notebook, you can prefix the !pip install my_package statement with the exclamation mark "!". Make sure to select only “flask” because there may be other packages that are not required but also contain the same term ( false positives): How to Install flask in a Jupyter Notebook? Here’s the general package installation process as a short animated video-it works analogously for flask if you type in “flask” in the search field instead: Wait for the installation to terminate and close all pop-ups.Now type in the library to be installed, in your example "flask" without quotes, and click Install Package.Click the small + symbol to add a new library to the project.Click the Python Interpreter tab within your project tab.Open File > Settings > Project from the P圜harm menu.How to install the flask library in your project within a virtual environment or globally? Here’s a solution that always works: The package is now installed on your macOS. Type “ pip install flask” without quotes and hit Enter.Similarly, you can install flask on macOS in four steps: The package is now installed on your Linux operating system. Wait for the installation to terminate successfully.If it doesn’t work, try "pip3 install flask" or “ python -m pip install flask“.Type “ pip install flask” (without quotes), hit Enter.You can install flask on Linux in four steps: To resolve this uncertainty, you can use pip3, which will always refer to your default Python 3 installation. Depending on what’s first in the PATH variable, pip will refer to your Python 2 or Python 3 installation-and you cannot know which without checking the environment variables. The difference between pip and pip3 is that pip3 is an updated version of pip for Python version 3. Third, if both do not work, use the following long-form command: python -m pip install flask Second, if this leads to an error message, try this command to install flask on your system: pip3 install flask How to download and install python on mac windows#Here’s how to open the command line on a (German) Windows machine:įirst, try the following command to install flask on your system: pip install flask It is now installed on your Windows machine. In this case, try "pip3 install flask" or “ python -m pip install flask“. The previous command may not work if you have both Python versions 2 and 3 on your computer.This installs flask for your default Python installation. Type “ pip install flask” (without quotes) in the command line and hit Enter again.Type "cmd" in the search bar and hit Enter to open the command line.How to Resolve ModuleNotFoundError: No module named ‘flask’?.How to Install flask in a Jupyter Notebook?.
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