I have a file ~/foo.py
from sage.all import *
def my_func(n):
var('t')
f(t) = t**n
return f(t)
But issuing sage: import foo raises the error SyntaxError: can't assign to function call
What am I doing wrong?
You are using Sage-specific syntax f(t) = t**n.
In a .py file, you cannot do that.
You have to replace it with pure Python-compliant code.
To understand what code you need to use, do this:
sage: preparse('f(t) = t**n')
'__tmp__=var("t"); f = symbolic_expression(t**n).function(t)'
Now you know how to write your function:
def my_func(n):
t = SR.var('t')
f = symbolic_expression(t**n).function(t)
return f(t)
See also these related Ask Sage questions:
You can save your file with the .sage extension and then load it in Sage using load('myfile.sage'). Then, your function should work as you have written it.
Asked: 2016-08-12 00:27:15 +0100
Seen: 1,148 times
Last updated: Aug 17 '16
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