--- a/src/ast_dump.rs
+++ b/src/ast_dump.rs
@@ -1,7 +1,17 @@
-use python_ast::{Module, Statement, Expr, BinOp};
+use python_ast::{Module, Statement, Expr, BinOp, UnaryOp};
 
 use std::iter;
 
+impl UnaryOp {
+    fn to_string(&self) -> &'static str {
+        match *self {
+            UnaryOp::UAdd => "+",
+            UnaryOp::USub => "-",
+            UnaryOp::Error => "BinOp::Error"
+        }
+    }
+}
+
 impl BinOp {
     fn to_string(&self) -> &'static str {
         match *self {
@@ -9,6 +19,8 @@ impl BinOp {
             BinOp::BinMult => "*",
             BinOp::BinEq => "==",
             BinOp::BinLt => "<",
+            BinOp::Sub => "-",
+            BinOp::Div => "/",
             BinOp::Error => "BinOp::Error"
         }
     }
@@ -17,6 +29,7 @@ impl BinOp {
 impl Expr {
     fn to_string(&self) -> String {
         match self.clone() {
+            Expr::UnaryOp(op, operand) => format!("{}{}", op.to_string(), operand.to_string()),
             Expr::BinOp(a, op, b) => format!("{} {} {}", a.to_string(), op.to_string(), b.to_string()),
             Expr::Compare(left, ops, comparators) => format!("{} {}", left.to_string(), {
                 let mut arguments = vec!();
@@ -113,6 +126,23 @@ impl Statement {
                     format!("{}\n{}else:\n{}", statements.join("\n"), make_indent(indent), orelse_.join("\n"))
                 }
             }),
+            Statement::For(target, iter, body, orelse) => format!("{}for {} in {}:\n{}", make_indent(indent), target.to_string(), iter.to_string(), {
+                let mut statements = vec!();
+                for arg in body {
+                    statements.push(arg.to_string(indent + 1));
+                }
+
+                let mut orelse_ = vec!();
+                for arg in orelse {
+                    orelse_.push(arg.to_string(indent + 1));
+                }
+
+                if orelse_.is_empty() {
+                    statements.join("\n")
+                } else {
+                    format!("{}\n{}else:\n{}", statements.join("\n"), make_indent(indent), orelse_.join("\n"))
+                }
+            }),
             Statement::Assign(targets, value) => format!("{}{} = {}", make_indent(indent), {
                 let mut exprs = vec!();
                 for target in targets {