Equivalent to IDL's help function
Hi all What is the equivalent to IDL its help function, e.g. == IDL> a = make_array(23,23,) IDL> help,a will result in: A FLOAT = Array[23, 23] or IDL> a = create_struct('idl',23) IDL> help,a gives: A STRUCT = -> <Anonymous> Array[1] == I have been looking for it ever since using numpy. It would make my life so much easier. Thanks, Siegfried -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.
If you're using IPython (strongly recommended)
a?
a??
If you're just using Python
help(a)
A
On Mon, Oct 7, 2013 at 1:15 PM, Siegfried Gonzi
Hi all
What is the equivalent to IDL its help function, e.g.
== IDL> a = make_array(23,23,)
IDL> help,a
will result in:
A FLOAT = Array[23, 23]
or
IDL> a = create_struct('idl',23)
IDL> help,a
gives:
A STRUCT = -> <Anonymous> Array[1]
==
I have been looking for it ever since using numpy. It would make my life so much easier.
Thanks, Siegfried
-- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.
_______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
On Mon, Oct 7, 2013 at 1:15 PM, Siegfried Gonzi
Hi all
What is the equivalent to IDL its help function, e.g.
== IDL> a = make_array(23,23,)
IDL> help,a
will result in:
A FLOAT = Array[23, 23]
or
IDL> a = create_struct('idl',23)
IDL> help,a
gives:
A STRUCT = -> <Anonymous> Array[1]
==
I have been looking for it ever since using numpy. It would make my life so much easier.
Thanks, Siegfried
help(a) Note that this is an inherent feature of python, not just numpy. So, you can do help(range) or help(np.zeros) or any such thing. Cheers! Ben Root
The other answers tell you how to access Python's excellent quick reference
documentation, but from your examples I'm not sure if that's what you're
looking for? If you just want to know what value some variable has at the
interactive prompt, just type its name and hit enter. (This is a general
feature of the prompt: it shows you the value returned by whatever you
type, whether that be a single variable or a complex expression.)
Some other useful commands: dir(x), type(x)
-n
On 7 Oct 2013 18:17, "Siegfried Gonzi"
Hi all
What is the equivalent to IDL its help function, e.g.
== IDL> a = make_array(23,23,)
IDL> help,a
will result in:
A FLOAT = Array[23, 23]
or
IDL> a = create_struct('idl',23)
IDL> help,a
gives:
A STRUCT = -> <Anonymous> Array[1]
==
I have been looking for it ever since using numpy. It would make my life so much easier.
Thanks, Siegfried
-- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.
_______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
There isn't anything quite the same. (I think what you are really asking
for is a way to print the essential info about one variable name, at least
that is how I would use the IDL "help" procedure). In IPython, I use the
whos magic to do something similar, although it just prints this info for
all variables or all variables of one class, rather than just one variable.
I do not think there is a way to do it for just one variable.
Here are some examples - you can see this works quite well but it will
become unwieldy if your interactive namespace becomes large:
In [1]: x = 1; y = 2; z = 3.3; d = {'one':1, 'two':2, 'three':3}
In [2]: whos
Variable Type Data/Info
-----------------------------
d dict n=3
x int 1
y int 2
z float 3.3
In [3]: whos dict
Variable Type Data/Info
----------------------------
d dict n=3
In [4]: xa = np.arange(111); ya = np.ones((22,4))
In [5]: whos ndarray
Variable Type Data/Info
-------------------------------
xa ndarray 111: 111 elems, type `int64`, 888 bytes
ya ndarray 22x4: 88 elems, type `float64`, 704 bytes
On Mon, Oct 7, 2013 at 12:15 PM, Siegfried Gonzi
Hi all
What is the equivalent to IDL its help function, e.g.
== IDL> a = make_array(23,23,)
IDL> help,a
will result in:
A FLOAT = Array[23, 23]
or
IDL> a = create_struct('idl',23)
IDL> help,a
gives:
A STRUCT = -> <Anonymous> Array[1]
==
I have been looking for it ever since using numpy. It would make my life so much easier.
Thanks, Siegfried
-- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.
_______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
On Mon, Oct 7, 2013 at 10:15 AM, Siegfried Gonzi
What is the equivalent to IDL its help function, e.g.
== IDL> a = make_array(23,23,)
IDL> help,a
will result in:
A FLOAT = Array[23, 23]
am I missing something, or is this what you get when you type a name on the command line: In [15]: a = np.ones((2,3), dtype=np.float32) In [16]: a Out[16]: array([[ 1., 1., 1.], [ 1., 1., 1.]], dtype=float32) or print a etc... -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chris.Barker@noaa.gov
participants (6)
-
Aron Ahmadia -
Aronne Merrelli -
Benjamin Root -
Chris Barker -
Nathaniel Smith -
Siegfried Gonzi