imag(complex(0,1)) gives TypeError (easy)

[jasongrout]

sage: imag(complex(0,1))
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)

/home/grout/.sage/temp/good/9936/_home_grout__sage_init_sage_0.py in <module>()

/home/grout/sage/local/lib/python2.5/site-packages/sage/misc/functional.pyc in imag(x)
    376     Return the imaginary part of x.
    377     """
--> 378     try: return x.imag()
    379     except AttributeError: return CDF(x).imag()
    380 

TypeError: 'float' object is not callable

This is because complex(0,1).imag is a number, not a function, so trying to call that number gives the error. As Robert Bradshaw said on the mailing list, Sage's imag() should really know about python complex numbers.

Component: algebra

Issue created by migration from https://trac.sagemath.org/ticket/5420

[aghitza]

comment:2

This looks fine in sage-4.0:

----------------------------------------------------------------------
| Sage Version 4.0, Release Date: 2009-05-29                         |
| Type notebook() for the GUI, and license() for information.        |
----------------------------------------------------------------------
sage: imag(complex(0,1))
1.00000000000000

[sagetrac-mvngu]

comment:3

This also looks OK with Sage 4.1:

----------------------------------------------------------------------
| Sage Version 4.1, Release Date: 2009-07-09                         |
| Type notebook() for the GUI, and license() for information.        |
----------------------------------------------------------------------
sage: imag(complex(0,1))
1.00000000000000

So I'm closing this ticket as fixed.