Deleted Integer Topology is Weakly Countably Compact

Theorem
Let $T = \left({S, \vartheta}\right)$ be a topological space where $\vartheta$ is the deleted integer topology on the set $S = \R_+ \setminus \Z$.

Then $T$ is weakly countably compact.

Proof
Let $A \subseteq S$ such that $A$ is infinite.

Let $x \in A$.

By definition, the deleted integer topology is a partition topology.

So $U$ is a union of open real intervals of the form $\left({n-1 . . n}\right)$.

Now if $x \in U$, it will be an element in some $\left({n-1 . . n}\right)$.

So there will exist $y \in U$ which will also be an element in that $\left({n-1 . . n}\right)$.

So, by definition, $x$ is a limit point of $A$.

So, by definition, $T$ is weakly countably compact.