Do I need to convert string to integer in python?

[Allerdyce.John]

Do I need to convert string to integer in python? or it will do it for
me (since dynamic type)?

In my python script, I have this line:
x /= 10;

when i run it, I get this error:
TypeError: unsupported operand type(s) for /=: 'unicode' and 'int'

I want to divide x by 10 and assign that value back to x.

Thank you.

 

[Heiko Wundram]

Do I need to convert string to integer in python? or it will do it for
me (since dynamic type)?

Yes. Dynamic typing doesn't say anything about a string and a number being
"equal," as they are (e.g.) in Perl, it just says that you don't have to
care what type of object a name is bound to. What you are thinking of is
called weak typing (auto-coercion between strings and numbers and such).

You'd have to do something like:
x = int(x)/10

--- Heiko.

 

[Alex Martelli]

Do I need to convert string to integer in python? or it will do it for
me (since dynamic type)?

Nope, no such implicit conversion (thanks be!). Strings are strings and
ints and ints and never the twain shall meet, except by explicit
request;-).

In my python script, I have this line:
x /= 10;

when i run it, I get this error:
TypeError: unsupported operand type(s) for /=: 'unicode' and 'int'

I want to divide x by 10 and assign that value back to x.

If you want x to remain a Unicode string when you're done,

x = unicode(int(x) / 10)

should work. If you want x to become an integer, omit the unicode call
around the int(x)/10 expression.


Alex

 

[Diez B. Roggisch]

Do I need to convert string to integer in python? or it will do it for
me (since dynamic type)?

In my python script, I have this line:
x /= 10;

when i run it, I get this error:
TypeError: unsupported operand type(s) for /=: 'unicode' and 'int'

I want to divide x by 10 and assign that value back to x.

Yes, you have to convert beforehand. Dynamic typing and weak typing (as in perl or php) aren't the same thing.

Dynamic typing means that you can rebind a variable (or better name) at runtime to contain a value with a new type. Weak
typing means that an object is reinterpreted as a value of another type when needed - and (often) leads to difficult errors.


Regards,

Diez

 

[Michael Amrhein]

Do I need to convert string to integer in python? or it will do it for
me (since dynamic type)?

In my python script, I have this line:
x /= 10;

when i run it, I get this error:
TypeError: unsupported operand type(s) for /=: 'unicode' and 'int'

I want to divide x by 10 and assign that value back to x.

Thank you.

Traceback (most recent call last):
File "<pyshell#4>", line 1, in -toplevel-
x/=10
TypeError: unsupported operand type(s) for /=: 'str' and 'int'10

Michael

 

[Steven D'Aprano]

Do I need to convert string to integer in python? or it will do it for
me (since dynamic type)?

In my python script, I have this line:
x /= 10;

when i run it, I get this error:
TypeError: unsupported operand type(s) for /=: 'unicode' and 'int'

No, the Python interpreter is playing a practical joke on you when it
raises that exception. Just persevere with the x /= 10 line, and
eventually the interpreter will give in and give you the result you need.
But be warned, if it is in a particularly playful mood, you may need to
try hundreds of times before it will stop messing about and get back to
work.

By the way, semi-colons are not required at the end of lines in Python.