Because of installing a proxy I deleted Anaconda prompt. After re-installing this I tried to read code in sublime text.
In order to read this sublime text, sqlalchemy is required, which I have justed installed, by typing in;
pip install SQLAlchemy
However, when i type in, i get the error:
import sqlalchemy
'import' is not recognized as an internal or external command,
operable program or batch file.
Can someone please explain what I am doing wrong?
Kind regards
Related
I have already install PyAutoGUI using command prompt.
enter image description here
However, when I type 'import PyAutoGUI' on python 3.11.2, it said, 'No module named 'pyautogui'.'
What's wrong with it?
I have tried to type 'pip install pyautogui' again but python3.11.2 still cannot identify the module.
I am using Colab to write a notebook using plotly. Within the notebook everything is fine and I can see the pie, but after converting the notebook into a html I don't see it.
this is the code:
import matplotlib.pyplot as plt
import plotly.express as px
Labels=['No', 'Ex-fumatore', 'Fumatore']
values=[1838, 1293, 574]
fig=px.pie(values = values,names = Labels,hole=.5,title = "Tipologie fumatori In Percentuale")
fig.show()
!jupyter nbconvert --to html /content/pie.ipynb
can somebody help me?
Thanks
There could be various reasons why converting an ipynb file to HTML from Colab is not working properly. Here are some possible solutions you could try:
1. Make sure that you have installed the required libraries in Colab that are needed for conversion. To install nbconvert, run the following command in a new cell:
!pip install nbconvert
2. If the nbconvert library is already installed, try uninstalling and reinstalling it to ensure that you have the latest version. You can uninstall it by running the following command:
!pip uninstall nbconvert
And then reinstall it by running:
!pip install nbconvert
3. Check that your notebook is properly saved and there are no unsaved changes. If there are unsaved changes, try saving the notebook and then converting it again.
4. Check the output of the conversion process for any error messages or warnings. These can help you identify the source of the problem.
5. Try converting the notebook to HTML using a different method. For example, you could download the notebook file to your local machine and then use a local installation of Jupyter Notebook to convert it to HTML.
Problem
We're trying to connect to Cloud Spanner via SQLAlchemy version 1.3.23 and python-spanner-sqlalchemy. Using Poetry for dependency management, sqlalchemy-spanner has been added like so (this is how the project was set up):
sqlalchemy = "~1.3"
sqlalchemy-spanner = { git="https://github.com/cloudspannerecosystem/python-spanner-sqlalchemy.git", tag="v0.1.0" }
When create_engine is called with
create_engine("spanner:///projects/my-project/instances/my-instance/databases/my-db")
I get the following error
class 'sqlalchemy.exc.NoSuchModuleError'>", "NoSuchModuleError(\"Can't load plugin: sqlalchemy.dialects:spanner\")
Attempts
Registry
I've tried adding (as seen in the conftest.py file in the python-spanner-sqlalchemy test package)
from sqlalchemy.dialects import registry
registry.register("spanner", "google.cloud.sqlalchemy_spanner", "SpannerDialect")
before create_engine is called, which leads to the following error:
class 'ModuleNotFoundError'>", "ModuleNotFoundError(\"No module named 'google.cloud.sqlalchemy_spanner'\")
This makes me think that the plugin dialect has not been correctly added since, in line 49 of setup.py, the connection for the dialect is made:
entry_points={
"sqlalchemy.dialects": [
"spanner = google.cloud.sqlalchemy_spanner:SpannerDialect"
]
},
Installing via python setup.py install
In the README for the spanner project, it says to clone the repo and install via python setup.py install. I performed this step, but am unsure how to import this into my current project or make my project aware of this library. I've never manually installed python packages before so, if anyone can provide any help here, I'd appreciate it.
What I did try:
install the library as per above
try to add the dependency via poetry : poetry add sqlalchemy-spanner. Got Could not find a matching version of package sqlalchemy-spanner
try to locate the library via pip : pip install sqlalchemy-spanner== which usually lists available package versions.
I'm not sure that either of the last 2 bullets actually check a local installation of a package. Not even really sure what I'm talking about here.
Update
So I was able to install the local version of python-spanner-sqlalchemy by using pip install /path/to/project, which works, but still having the same issues with loading the dialect.
I added an import for SpannerDialect in the code (in the Registry section) above with from google.cloud.sqlalchemy_spanner import SpannerDialect. PyCharm auto-completed this for me which indicates to me that the package is successfully installed and available. But I receive the ModuleNotFoundError for google.cloud.sqlalchemy_spanner when running.
I ran python in my project root directory and, from the repl, imported SpannerDialect with no errors.
Solution
To clarify, the solution #larkee provided worked regarding the updated repository URL.
As a note, we recently moved the repo from cloudspannerecosystem/python-spanner-sqlalchemy to googleapis/python-spanner-sqlalchemy.
I clarified why that worked in the comments to their answer
I have not tested the answer from #neondot42, but I have seen this brought up as well, so take a look there if you're having the same issue.
sorry for the late response. I was recently struggling with a similar problem. Sqlalchemy was unable to load the spanner dialect. I tried uninstalling and installing different versions with pip but nothing seemed to work.
At the end what did the trick was specifying the "driver" part of the database URL as "spanner" too. So the final URL looked like this:
spanner+spanner:///projects/project-id/instances/instance-id/databases/database-id
I am not entirely sure of why this appeared to be the solution for me, as all the documentation I could find on Google's end just showed that you could use only the "spanner:///..." to connect. Also I am not familiar with the inner workings of sqlalchemy and how it should detect other installed dialects. However, I hope this solution can help someone else.
I was able to replicate the error you are seeing by installing sqlalchemy but not having sqlalchemy-spanner installed at all:
pip install sqlalchemy==1.3
pip uninstall sqlalchemy-spanner
>>> from sqlalchemy import create_engine
>>> engine = create_engine(<url>)
sqlalchemy.exc.NoSuchModuleError: Can't load plugin: sqlalchemy.dialects:spanner
After I install sqlalchemy-spanner I am able to use SQLAlchemy without issue:
pip install git+git://github.com/googleapis/python-spanner-sqlalchemy.git#v0.1.0
>>> from sqlalchemy import create_engine, MetaData, Table, Column, Integer, String, inspect
>>> engine = create_engine(<url>)
>>> metadata = MetaData(bind=engine)
>>> table = Table(
... "TestTable",
... metadata,
... Column("user_id", Integer, primary_key=True),
... Column("user_name", String(16), nullable=False),
... )
>>> table.create()
>>> inspect(engine).get_table_names()
['TestTable']
>>>
Based on this, I think the issue is that sqlalchemy-spanner is not being installed. Unfortunately, I'm not familiar with Poetry for dependency management so I'm not sure exactly what is going wrong. As a note, we recently moved the repo from cloudspannerecosystem/python-spanner-sqlalchemy to googleapis/python-spanner-sqlalchemy. I am able to use either for the pip command but perhaps Poetry requires the newer one?
I'm trying to connect to a mySQL database through SQLAlchemy and I can't get it to work for the life of me. Here's the code I'm running and the error I'm getting.
import pandas as pd
import sqlalchemy as sql
import urllib.parse
user = 'user'
pswd = urllib.parse.quote_plus('password')
connect_string = 'mysql://{}:{}#localhost:8018/test'.format(user, pswd)
sql_engine = sql.create_engine(connect_string)
>>> ModuleNotFoundError: No module named 'MySQLdb'
After seeing this, I've tried numerous different ways of installing 'MySQLdb' ( including the obvious 'pip3 install mysqlclient') and when I run that in my terminal, I get the following.
>>> ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
I know this question has been posted here before but I've spent 2 hours now trying to figure this out with the advice on those other questions and nothing is working. Can anyone help? Below is a picture of the full error I'm getting when I try and install "mysqlclient"
According to
https://pypi.org/project/mysqlclient/#files
mysqlclient only offers pre-compiled wheel files for Windows machines running 64-bit Python 3.6, 3.7, and 3.8. All other configurations require that it be installed from source, and that can be ... complicated.
You may want to try installing PyMySQL instead, and use a connection URI of the form
mysql+pymysql://<username>:<password>#<host>/<dbname>[?<options>]
SQLAlchemy is a high-level ORM. To connect to backends it needs Python DB API driver(s). You can install SQLAlchemy with a MySQL driver using
pip install -U 'SQLAlchemy[mysql]'
See the list of extra drivers available for such installation.
Most drivers have parts written in C/C++ and thus require compilation. You need to install MySQL-related libraries to compile mysqlclient. See https://stackoverflow.com/search?q=%5Bpip%5D+install+%5Bmysql%5D+%22mysql_config%22+not+found
There are a few pure-Python drivers. They're easier to install. PyMySQL is one such driver. To install it along with SQLAlchemy:
pip install -U 'SQLAlchemy[pymysql]'
I am trying to run this command in Jupyter Notebook: import pyarrow, get the same error: "ModuleNotFoundError: No module named 'pyarrow'
I have installed it already with pip3 and brew also. So when I ran pip3install pyarrow it says requirements are already satisfied. All other libraries I have installed runs with no issues from the same directory.
Thank you.
This is an odd one, for sure. I am not familiar enough with pyarrow to know why the following worked.
From the docs, If I do pip3 install pyarrow and run pip3 list, pyarrow shows up in the list but I cannot seem to import it from the python CLI. Yet, if I also run conda install -c conda-forge pyarrow, installing all of it's dependencies, now jupyter notebook can import it properly.
Are you using a venv? Try running jupyter kernelspec list in your console and make sure your kernel is running in the environment you're expecting it to be.
https://github.com/jupyter/notebook/issues/2359 (discussion about this here)