Context¶

Returns the context a symbol belongs to. Context[] gives the current one.

$ wo 'Context[]'
Global`

$ wo 'Context[Plus]'
System`

Context holds its argument, so it reports the context of the symbol rather than of its value:

$ wo 'x = 1; Context[x]'
Global`

A symbol written with a context belongs to it. This is what a package's Begin["Private"] builds on: names read inside it become symbols of the private context, so they mean nothing outside the package.

$ wo 'A`b = 5; {A`b, Context[A`b]}'
{5, A`}

A name given as a string is resolved the same way, and one that names no symbol is reported:

$ wo 'Context["b"]'

Context::notfound: Symbol b not found.
Context[b]