This is an error (TypeError) that is displayed by the Python interpreter when one of the parameter in a slice function is not a value of type integer or None.

For example:

>>> a = 'welcome'

>>> a[2.2:3]

Traceback (most recent call last):

File "<stdin>", line 1, in <module>

TypeError: slice indices must be integers or None or have an __index__ method

The error occur because the value 2.2 is not an integer or None

Step-by-step explanation:

8 0

3 years ago

Jonathan collects postcards and stamps. The number of postcards in his collection is 12 more than 3/4 the number of stamps. He h

zimovet [89]

For this case we define the following variable:

<em>x: number of stamps </em>

We now write the equation that models the problem:

$\frac {3} {4} x + 12 = 39$

From here, we clear the value of x.

We have then:

$\frac {3} {4} x = 39-12\\\frac {3} {4} x = 27\\x = (\frac {4} {3}) (27)\\x = (4) (9)\\x = 36$

Answer:

The number of stamps he has is:

$x = 36$

7 0

3 years ago

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