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Try to connect a Firebird 3.05 Database to Python (pandas)

I am trying to connect a Firebird database with Python. I already tried it with pyodbc:
import os
import pyodbc
server = '127.0.0.1/3050'
database = 'Databse-Name'
username = 'Username'
password = 'password'
cnxn = pyodbc.connect('DRIVER={Firebird/InterBase(r)
driver};SERVER='+server+';DATABASE='+database+';UID='+username+';PWD='+ password)
cursor = cnxn.cursor()
I get this error:
OperationalError: ('08004', "[08004] [ODBC Firebird Driver]Unable to connect to data source: library 'gds32.dll' failed to load (-904) (SQLDriverConnect); [08004] [ODBC Firebird Driver]Invalid connection string attribute (0)")
I am not sure why he tries to find 'gds32.dll'. In the ODBC-Connection I used this driver C:\Program Files (x86)\assfinet ams.5\BIN\FB30\x64\fbclient.dll
I am using Firebird as a 64-bit version, so I am a bit clueless because of the 32 in 'gds32.dll'.
I am not sure, if it is the right way to try it with pyodbc. I am open for other advice.
Has anyone an idea why it is not working?

The fact the error mentions gds32.dll means it tried to load fbclient.dll, and that didn't work. Then it tried to fallback to gds32.dll. The gds32.dll is supported historically, because Firebird was forked from InterBase 22 years ago, and InterBase used the name gds32.dll for its client library. The 64-bit version is also called gds32.dll.
The problem is that, unless the C:\Program Files (x86)\assfinet ams.5\BIN\FB30\x64\ folder is explicitly on the path, or you configured the CLIENT connection property, that no library is found (or possibly it's 32-bit not 64-bit).
You need a 64-bit fbclient.dll. If that C:\Program Files (x86)\assfinet ams.5\BIN\FB30\x64\ is really a 64-bit Firebird (then C:\Program Files (x86) is the wrong location), you either need to specify the path of the 64-bit client library in the CLIENT connection property, or you can install it with - from a command prompt started as administrator - instclient i f from a Windows 64-bit Firebird installation, or do a client install using a Firebird installer. Alternatively, you can download the zipkit of a Windows 64-bit Firebird and use its fbclient.dll.
You should also consider using one of the Firebird drivers for Python, instead of using ODBC. You can choose from:
firebird-driver - uses fbclient.dll
FDB - uses fbclient.dll (deprecated and replaced by firebird-driver)
firebirdsql (aka pyfirebirdsql) - a pure Python driver (no native dependencies)
Also, I'm not sure if Gordon's advice about using SQLAlchemy is correct, but I'd recommend investigating that (though below the covers SQLAlchemy will probably use FDB or maybe firebird-driver, so you'd still need a proper 64-bit client library to load).

If you are going to use pandas with a database other than SQLite you should be using SQLAlchemy (ref: here). In your case you would use the sqlalchemy-firebird dialect.
Edit re: comment to original answer
Since we are connecting to localhost we can expect that Firebird has been installed and therefore the client tools are available (which is true for a default install). In that case, the following works on a Windows 8.1 test machine:
import pandas as pd
import sqlalchemy as sa
# note the r"" string
engine = sa.create_engine(r"firebird://SYSDBA:masterkey#localhost/C:\ProgramData\assfinet\assfinet ams.5\Individuell 2022\DB0 - Stand 2022_02-10.FDB")
df = pd.read_sql_query("SELECT * FROM my_table", engine)
although a better approach would be to build the connection URL like this
connection_url = sa.engine.URL.create(
"firebird",
username="SYSDBA",
password="masterkey",
host="localhost",
database=r"C:\ProgramData\assfinet\assfinet ams.5\Individuell 2022\DB0 - Stand 2022_02-10.FDB",
)
engine = sa.create_engine(connection_url)

PYODBC + MS SQL SERVER connection with Encrypt=yes not connecting

We have a python flask app running on an aws centos ECS instance. We are trying to establish an encrypted connection to our database via PYODBC with odbc 17 on Linux. When running locally we just use the SQL server driver. Currently we have the code:
params = urllib.parse.quote_plus(driver;server;user;pwd;...;Encrypt=yes)
SQLALCHEMY_DATABASE_URI="mssql+PYODBC:///?odbc_connect=%s" %params
We have tls enabled on the server. The connection works locally on windows but not deployed in Linux.
Currently doing a deployment with 'yes' instead of 'true'. We are also about to try with 'trustedserverconnection=yes'. Any insight on this process would be greatly appreciated!
Update: latest error, invalid connection string attribute 'trustservercertificate'

We ended up implementing a second connection param:
TrustServerCertificate=YES
Which is not ideal, obviously, because we want to have good security implementation practices. In future state we will need to set this to false and put our ssl pem file in the Linux ssl store.
Hope this helps someone. Had some issues finding documentation for pyodbc with MS SQL Server.

According to this documentation, pyodbc passes the connection string through to the underlying ODBC driver. Microsoft's
article Using Connection String Keywords with SQL Server Native Client
documents both the Encrypt and TrustServerCertificate attributes. The TrustServerCertificate setting should generally be avoided in production databases; however, it is very useful when testing encrypted connections to a development database that is using a self-signed certificate. For example, the default installation of SQL Server uses a self-signed certificate and will require this setting.
In my mssql+pyodbc connection strings I just append ?Encrypt=yes&TrustServerCertificate=yes as appropriate. Please note, if you already have another setting after a question mark ? then use & instead of ?, for example: ?Trusted_Connection=yes&Encrypt=yes&TrustServerCertificate=yes

Issues connecting to a DB2 server using Python. Possible issue identifying the driver

I had written code to connect to a DB2 server using Python that was working fine until my company had me upgrade the IBM DB2 Driver to 11.5. Now, its no longer working and I'm getting the following error message:
SQLCODE=-30082n: [IBM][CLI Driver] SQL30082N Security processing failed with reason "15" ("PROCESSING FAILURE"). SQLSTATE=08001
I verified that I have the right password. Also, I confirmed that I still have access to the Database by going through the ODBC Manager in Windows and testing a connection that way. I've checked several pages here on Stackoverflow and other sites and nothing seems to work. Most of the issues people are having on this site involve different error messages.
Here is the original code using the ibm_db module:
import ibm_db
import ibm_db_dbi
con = ibm_db_dbi.Connection(ibm_db.connect("ABC1011","rsmith","Passw123"))
When that stopped working i tried connecting using pyodbc as a connection:
import pyodbc
cnxn = pyodbc.connect('DRIVER={IBM DB2 ODBC DRIVER - DB2COPY2};Database=ABC1011;UID=rsmith; PWD=Passw123')
Again, I already verified in the ODBC Datasource Administrator (64-bit) that I am using the correct password, I have the correct database, and that I am using the correct driver's name. Does anyone know what else I may need to include to get a connection to work?
Thank you.

Is it possible to specify the driver dll directly in the ODBC connection string?

I'm trying to use pyodbc to connect to a SQL Server (MS SQL Server through FreeTDS) in a portable application; since it's supposed to be standalone, I would like to avoid having to explicitly install the driver on the system, just bringing the ODBC driver dll along the application.
This page suggests that it's possible to specify the driver dll directly in the connection string
Specify the DRIVER= parameter in the szConnStrIn argument to the SQLDriverConnect function. For example:
szConnStrIn = "driver=ospath/dbodbc6.dll;dbf=c:\asademo.db"
where ospath is the operating system subdirectory of your Adaptive Server Anywhere installation directory.
Trying it through pyodbc+libtdsodbc.so on Linux, it does work fine; however, trying the same on Windows (pyodbc+tdsodbc.dll) I always get
pyodbc.Error: ('IM002', '[IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified (0) (SQLDriverConnect)')
(my libtdsodbc.so seems to be fine, though, since, if I install it as a "regular" driver and refer it with its name it connects fine)
Checking the documentation of SQLDriverConnect and related pages there's no mention of the DRIVER= option used straight with the dll path.
So, isn't "straight-to-driver-dll" connection not supported on Windows? Are there any alternatives, especially with Python, to connect straight to the driver dll, bypassing the ODBC driver manager?

Like the answer by TallTed mentions, the documentation you linked contains quite a bit of information (but maybe it was not there at the time), and it is also explicit on the meaning of the driver parameter:
Description of the driver as returned by the SQLDrivers function. For
example, Rdb or SQL Server.
It follows that it is not valid to indicate a path there in Windows (with the default ODBC implementation at least).
It also does not seem to be possible in general to use an ODBC driver without registering it, which requires admin rights. This answer lists some options.

It's likely impossible to troubleshoot this now, 2.5 years later, but my best guess would be a typo or permissions error on the unregistered libtdsodbc.so, or some other error in your SQLDriverConnect() call (which you did not provide, so cannot be analyzed).
I think you must not have read the documentation of SQLDriverConnect() carefully or completely, as it explicitly includes DRIVER in the EBNF of SQLDriverConnect() --
empty-string ::=attribute ::= attribute-keyword=attribute-value | DRIVER=[{]attribute-value[}]
-- and discusses it further in the details of the "Comments" section.
Note that this does not "bypass the ODBC driver manager," though it does make a DSN-less connection (so does not refer to the odbc.ini Registry trees on Windows, nor the odbc.ini file(s) on other OS).

Finding the right DRIVER string for pyodbc

How do I find which DRIVER string to use with pyodbc? I'm trying to connect to an Oracle database.
The connection documentation isn't very specific about how to go about this.
I'm on OSX 10.9.

At first you must have Oracle drivers installed on your machine. Then, on your system you can create DSN (Data Source Name). I see that there if free OSX ODBC manager. I hope you can create DSN with it and then you can use it like:
pyodbc.connect('DSN=my_dsn;uid=username;pwd=secretpassword')
If this works well and you want to omit DSN you can use more fancy Oracle connect string for ODBC which be found at: http://www.connectionstrings.com/oracle/