zsh：找不到命令：flask

Question

我无法继续执行命令flask db init

from flask import Flask, render_template, request, redirect, url_for, jsonify
from flask_sqlalchemy import SQLAlchemy
import sys
from flask_migrate import Migrate
from flask_cli import FlaskCLI
from flask_cli import FlaskGroup

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'postgres://postgres@localhost:5432/todoapp'
db = SQLAlchemy(app)

migrate = Migrate(app, db)

class Todo(db.Model):
    __tablename__ = 'todos'
    id = db.Column(db.Integer, primary_key=True)
    description = db.Column(db.String(), nullable=False)

    def __repr__(self):
        return f'<Todo {self.id} {self.description}>'

db.create_all() 

@app.route('/')
def index():
    return render_template('index.html', data=Todo.query.all())

if __name__ == '__main__':
    app.run(debug=True)  

当我放置命令pip3列表时，结果如下：

Package            Version
------------------ -------
alembic            1.3.3  
appnope            0.1.0  
astroid            2.2.5  
attrs              19.1.0 
backcall           0.1.0  
bleach             3.1.0  
Click              7.0    
decorator          4.4.0  
defusedxml         0.6.0  
entrypoints        0.3    
Flask              1.1.1  
Flask-Alembic      2.0.1  
Flask-CLI          0.4.0  
Flask-Migrate      2.5.2  
Flask-MySQLdb      0.2.0  
Flask-SQLAlchemy   2.4.1  
Flask-WTF          0.14.2 
ipykernel          5.1.2  
ipython            7.8.0  
ipython-genutils   0.2.0  
ipywidgets         7.5.1  
isort              4.3.21 
itsdangerous       1.1.0  
jedi               0.15.1 
Jinja2             2.10.1 
jsonschema         3.0.2  
jupyter            1.0.0  
jupyter-client     5.3.1  
jupyter-console    6.0.0  
jupyter-core       4.5.0  
lazy-object-proxy  1.4.2  
Mako               1.1.1  
MarkupSafe         1.1.1  
mccabe             0.6.1  
mistune            0.8.4  
mysql              0.0.2  
mysqlclient        1.4.6  
nbconvert          5.6.0  
nbformat           4.4.0  
notebook           6.0.1  
pandocfilters      1.4.2  
parso              0.5.1  
passlib            1.7.2  
pexpect            4.7.0  
pickleshare        0.7.5  
pip                20.0.2 
prometheus-client  0.7.1  
prompt-toolkit     2.0.9  
ptyprocess         0.6.0  
pygame             1.9.6  
Pygments           2.4.2  
pylint             2.3.1  
pyrsistent         0.15.4 
python-dateutil    2.8.0  
python-editor      1.0.4  
pyzmq              18.1.0 
qtconsole          4.5.4  
Send2Trash         1.5.0  
setuptools         45.1.0 
six                1.12.0 
SQLAlchemy         1.3.13 
terminado          0.8.2  
testpath           0.4.2  
tornado            6.0.3  
traitlets          4.3.2  
typed-ast          1.4.0  
uWSGI              2.0.18 
wcwidth            0.1.7  
webencodings       0.5.1  
Werkzeug           0.16.0 
wheel              0.33.1 
widgetsnbextension 3.5.1  
wrapt              1.11.2 
WTForms            2.2.1 

而且我的python库站点软件包路径是

/Users/kurosaki/Library/Python/3.8/lib/python/site-packages/

我已经尝试过python3 -m flask run导致

pkg_resources.DistributionNotFound：'alembic> = 0.7'分布找不到，并且是应用程序必需的]

我需要帮助才能在终端上执行flask命令。

Answer 1

即使使用python 3.8或python 3.7，我也有答案

我必须使用

python3 -m flask db init

因此，在每个烧瓶命令中，我都必须放入

python3 -m

之前