From 35b2101770daa21b12f37768d03dc08ab85be443 Mon Sep 17 00:00:00 2001
From: Cologler <10906962+Cologler@users.noreply.github.com>
Date: Mon, 20 May 2019 18:45:28 +0800
Subject: [PATCH 1/3] Update core.py

#3694
---
 pipenv/core.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pipenv/core.py b/pipenv/core.py
index 7f04ac49..425c784a 100644
--- a/pipenv/core.py
+++ b/pipenv/core.py
@@ -1775,6 +1775,13 @@ def ensure_lockfile(keep_outdated=False, pypi_mirror=None):
 
 
 def do_py(system=False):
+    if not project.virtualenv_exists:
+        click.echo(
+            crayons.red("location not created nor specified"),
+            err=True,
+        )
+        return    
+    
     try:
         click.echo(which("python", allow_global=system))
     except AttributeError:

From a3556e9d7fa4cfad4013d022efa8d33e9026cd05 Mon Sep 17 00:00:00 2001
From: Cologler <10906962+Cologler@users.noreply.github.com>
Date: Mon, 20 May 2019 22:40:16 +0800
Subject: [PATCH 2/3] Update core.py

---
 pipenv/core.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pipenv/core.py b/pipenv/core.py
index 425c784a..2ba8af7f 100644
--- a/pipenv/core.py
+++ b/pipenv/core.py
@@ -1777,7 +1777,11 @@ def ensure_lockfile(keep_outdated=False, pypi_mirror=None):
 def do_py(system=False):
     if not project.virtualenv_exists:
         click.echo(
-            crayons.red("location not created nor specified"),
+            "{}({}){}".format(
+                crayons.red("No virtualenv has been created for this project "),
+                crayons.white(project.project_directory, bold=True),
+                crayons.red(" yet!")
+            ),
             err=True,
         )
         return    

From 78029a6d134683e79275255b4acc7c9c9db93a7b Mon Sep 17 00:00:00 2001
From: frostming <frostming@tencent.com>
Date: Mon, 27 May 2019 08:53:51 +0800
Subject: [PATCH 3/3] news entry

---
 news/3753.trivial.rst | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 news/3753.trivial.rst

diff --git a/news/3753.trivial.rst b/news/3753.trivial.rst
new file mode 100644
index 00000000..2ab71d38
--- /dev/null
+++ b/news/3753.trivial.rst
@@ -0,0 +1 @@
+Improve the error message of ``pipenv --py`` when virtualenv can't be found.