python sql help

[ndc85430]

def opvragenminimumstock(partnum):
    minimumstock = cursor1.execute("select columna from TABLEA where columnb = '"+ partnum +"'")
    print(minimumstock)
    pass

You should never be building queries by concatenating strings (the term to look up is "SQL injection"). Instead, you should be using the right placeholder character (which is apparently ?, according to the documentation.

In addition, that pass statement is unnecessary.