Python 3.x - TypeError: not all arguments converted during string formatting

Question

I have this problem in my code and I can not solve, since it works in version 2.7, but 3.4 already of this message.

In my code I have methods: Method 1

def getFacebookPageFeedData(page_id, access_token, num_statuses):
parameters = "/?access_token=%s" % (access_token, num_statuses)

Method 2

def scrapeFacebookPageFeedStatus(page_id, access_token):

In this second method I have:

statuses = getFacebookPageFeedData(page_id, access_token, 100)

But every time I run the code, this error is displayed:

parameters = "/?access_token=%s" % (access_token, num_statuses)
TypeError: not all arguments converted during string formatting

What should I do to the version 3.4 this parameter passing through?

The string has one %s, and you're interpolating two objects. Did you read the error message and look at the code it points out? — TigerhawkT3
– TigerhawkT3, Commented Oct 23, 2016 at 1:32
Yeah. It points to parameters = "/?access_token=%s" % (access_token, num_statuses) — Leandro Santos
– Leandro Santos, Commented Oct 23, 2016 at 1:43
That's right. Did you look over that code? Do you know what it means? Did you Google the error? — TigerhawkT3
– TigerhawkT3, Commented Oct 23, 2016 at 1:44

joanmaller · Accepted Answer · 2016-10-23 18:08:34Z

2

You should put as many %s as variables you want to insert in the string. I think you want only to insert the access token:

parameters = "/?access_token=%s" % (access_token)

If you printed parameters the result would be:

/?access_token=x (where x is the variable access_token)

answered Oct 23, 2016 at 18:08

joanmaller

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elethan · Accepted Answer · 2016-10-23 02:04:02Z

0

This exception will be raised in Python 2.x and Python 3.x.

If you have only a single %s in your string, then you can only have a single argument after the % that follows your string:

print('Hello %s' % 'world')

On the other hand, if you have two arguments following your string as you do, you need two string formatting characters (like %s) in your string:

print('%s %s' % ('Hello', 'world'))

Based on a little googling, it looks like what you need in your case is:

parameters = "/?access_token=%s&limit=%s" % (access_token, num_statuses)

One really great piece of study material for learning about string formatting can be found here. And of course, the Python docs are a great place to start as well.

edited Oct 23, 2016 at 2:04

answered Oct 23, 2016 at 1:56

elethan

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