# NameError: name 'Integer' is not defined

Hi, all of a sudden, I'm experiencing a strange error and cannot find any solution for it. Sage itself works fine, but as soon as I try to load any .sage file, the application can't start. Inside sage I can do any calculation/operation as usual, but if I for example load an application that contains:

```
a=1
b=2
```

sage returns:

```
---------------------------------------------------------------------------
NameError Traceback (most recent call last)
<ipython-input-1-496f9e9073df> in <module>()
----> 1 load("u.sage")
sage/structure/sage_object.pyx in sage.structure.sage_object.load (/build/sagemath/src/sage-7.4/src/src/build/cythonized/sage/structure/sage_object.c:12333)()
/usr/lib/python2.7/site-packages/sage/repl/load.pyc in load(filename, globals, attach)
245 if attach:
246 add_attached_file(fpath)
--> 247 exec(preparse_file(open(fpath).read()) + "\n", globals)
248 elif ext == '.spyx' or ext == '.pyx':
249 if attach:
/usr/lib/python2.7/site-packages/sage/structure/sage_object.so in <module>()
NameError: name 'Integer' is not defined
```

Yesterday everything was working fine. I hadn't done any system upgrades and the error appears on programs written and working yesterday and on new written programs.

Does anyone know how to solve this error or where it suddenly comes from? A restart didn't change anything...

For some reason sage.all isn't being imported. Can you tell us exactly what you are doing to load? Is this on your personal computer or in the cloud or ... ? Tell us as much detail about your specific situation as you can.

Similar but due to an incompatibility in processors, maybe: https://ask.sagemath.org/question/323...

Also possibly related: https://groups.google.com/forum/#!top...

This is happening when I am in the sage terminal (local, not in the cloud) and I type load("file.sage"). The machine is running arch-linux. I'm not using notebook or anything else. Just the simple sage console. Everything else works fine. When I - instead of loading the file inside sage - type in my bash sage file.sage, sage creates a .py file and works fine too. There seems to be an error retrieving the file inside sage and I don't know why. EDIT: I'm using a AMD A10-5750M APU.

Hi

on cocalc.com (Jupyter notebook) I do not understand why I got the error:and the same code is error free on my local sage 8.2 W10 notebook. do I have to import a library ?