From d65b637eced6b5117aa8528193b1f26880b1b70c Mon Sep 17 00:00:00 2001
From: Hossein <36113130+haghbinh@users.noreply.github.com>
Date: Tue, 18 Apr 2023 11:31:39 +0330
Subject: [PATCH] new

---
 ch04/ch04.ipynb | 8 ++++----
 ch04/test.csv   | 4 ++++
 2 files changed, 8 insertions(+), 4 deletions(-)
 create mode 100644 ch04/test.csv

diff --git a/ch04/ch04.ipynb b/ch04/ch04.ipynb
index 8f2e7464..7abd11ee 100644
--- a/ch04/ch04.ipynb
+++ b/ch04/ch04.ipynb
@@ -236,7 +236,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 8,
    "metadata": {},
    "outputs": [
     {
@@ -249,7 +249,7 @@
        "dtype: int64"
       ]
      },
-     "execution_count": 4,
+     "execution_count": 8,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -2813,7 +2813,7 @@
  "metadata": {
   "anaconda-cloud": {},
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -2827,7 +2827,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.1"
+   "version": "3.9.13"
   },
   "toc": {
    "nav_menu": {},
diff --git a/ch04/test.csv b/ch04/test.csv
new file mode 100644
index 00000000..72c31927
--- /dev/null
+++ b/ch04/test.csv
@@ -0,0 +1,4 @@
+A,B,C,D
+1.0,2.0,3.0,4.0
+5.0,6.0,,8.0
+10.0,11.0,12.0,
\ No newline at end of file