TypeError: sequence item 0: expected string, int found

Michael Zippo

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I am attempting to insert data from a dictionary into a database. I want to iterate over the values and format them accordingly, depending on the data type. Here is a snippet of the code I am using:

def _db_inserts(dbinfo):
    try:
        rows = dbinfo["datarows"]

        for row in rows:
            field_names = ";".join([""{0}"".format(x) for x in row.keys()])
            value_list = row.values()

            for pos, value in enumerate(value_list):
                if isinstance(value, str):
                    value_list[pos] = ""{0}"".format(value)
                elif isinstance(value, datetime):
                    value_list[pos] = ""{0}"".format(value.strftime("%Y-%m-%d"))

            values = ";".join(value_list)

            sql = "INSERT INTO table_foobar ({0}) VALUES ({1})".format(field_names, values)

    except Exception as e:
        print "BARFED with msg:",e

When I run the algo using some sample data (see below), I get the error:

TypeError: sequence item 0: expected string, int found

An example of a value_list data which gives the above error is:

value_list = [377, -99999, -99999, "f", -99999, -99999, -99999, 1108.0999999999999, 0, "f", -99999, 0, "f", -99999, "f", -99999, 1108.0999999999999, -99999, "f", -99999, "f", -99999, "f", "f", 0, 1108.0999999999999, -99999, -99999, "f", "f", "f", -99999, "f", "1984-04-02", -99999, "f", -99999, "f", 1108.0999999999999]

What am I doing wrong?

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datetime Python module

How do I calculate the date six months from the current date using the datetime Python module?

1 answers

By Eef

I am using the datetime Python module. I am looking to calculate the date 6 months from the current date. Could someone give me a little help doing this?

The reason I want to generate a date 6 months from the current date is to produce a review date. If the user enters data into the system it will have a review date of 6 months from the date they entered the data.

478

Answer #1

I found this solution to be good. (This uses the python-dateutil extension)

from datetime import date
from dateutil.relativedelta import relativedelta

six_months = date.today() + relativedelta(months=+6)

The advantage of this approach is that it takes care of issues with 28, 30, 31 days etc. This becomes very useful in handling business rules and scenarios (say invoice generation etc.)

$ date(2010,12,31)+relativedelta(months=+1)
  datetime.date(2011, 1, 31)

$ date(2010,12,31)+relativedelta(months=+2)
  datetime.date(2011, 2, 28)

We hope this article has helped you to resolve the problem. Apart from TypeError: sequence item 0: expected string, int found, check other code Python module-related topics.

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Marie Chamberlet

Shanghai | 2023-03-25

Simply put and clear. Thank you for sharing. TypeError: sequence item 0: expected string, int found and other issues with enum Python module was always my weak point 😁. Will get back tomorrow with feedback

Angelo Galleotti

Vigrinia | 2023-03-25

Simply put and clear. Thank you for sharing. TypeError: sequence item 0: expected string, int found and other issues with join was always my weak point 😁. I am just not quite sure it is the best method

Boris Zelotti

Boston | 2023-03-25

Thanks for explaining! I was stuck with TypeError: sequence item 0: expected string, int found for some hours, finally got it done 🤗. Will get back tomorrow with feedback