From 8194ccbb38b63e0e29d73bbbdf9b37dd5a0ad529 Mon Sep 17 00:00:00 2001
From: DarkCodeOrg <davidclapton@protonmail.com>
Date: Sat, 14 Aug 2021 19:32:55 +0530
Subject: [PATCH] hola

---
 __pycache__/list_adv.cpython-39.pyc | Bin 0 -> 2364 bytes
 file_handling_3.py                  |  30 ++++++++++++++++++++++++++++
 file_handling_4.py                  |   1 +
 list-adv.py => list_adv.py          |   0
 student_new.dat                     | Bin 152 -> 202 bytes
 5 files changed, 31 insertions(+)
 create mode 100644 __pycache__/list_adv.cpython-39.pyc
 create mode 100644 file_handling_4.py
 rename list-adv.py => list_adv.py (100%)

diff --git a/__pycache__/list_adv.cpython-39.pyc b/__pycache__/list_adv.cpython-39.pyc
new file mode 100644
index 0000000000000000000000000000000000000000..64382f96621b941b207f3a9c0c3ec68f86220c58
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diff --git a/file_handling_3.py b/file_handling_3.py
index 1808991..c93cacd 100644
--- a/file_handling_3.py
+++ b/file_handling_3.py
@@ -2,8 +2,11 @@
 ## File pointer    ( analogous to a bookmark in a book )
 
 import sys
+#sys.path.append("/home/david/hello_world/python/basics")
 import os
 
+#import list_adv as f_list  ## it has functions to manipulate a list
+
 ## infile = open("filename","r") would open the file and put the file
 # pointer at the beginning of the file
 # ch = infile.read(1) would read 1 byte (one character)  from the file
@@ -49,5 +52,32 @@
 dfile.close()
 
 
+## searching in a binary file
+
+found = False
+dfile = open("student_new.dat","rb")
+search_for = []  ## these are the roll nos to find for
+reply = 'y' 
+while reply == 'y':
+    foo = int(input("Enter the roll number to search for :"))
+    search_for.append(foo)
+    reply = input("Do you wish to search for more ?(y/n) :")
+else :
+
+    try:
+        print("Searching in the file student_new.dat ......")
+        while True:
+            data_r = pickle.load(dfile)
+            if data_r['Roll'] in search_for:
+                print(data_r)
+                found = True
+    except EOFError:
+        if found == False:
+            print("no such records found..")
+
+        else:
+            print("search successful")
+
+            dfile.close()
 
 
diff --git a/file_handling_4.py b/file_handling_4.py
new file mode 100644
index 0000000..32c6af8
--- /dev/null
+++ b/file_handling_4.py
@@ -0,0 +1 @@
+## 
\ No newline at end of file
diff --git a/list-adv.py b/list_adv.py
similarity index 100%
rename from list-adv.py
rename to list_adv.py
diff --git a/student_new.dat b/student_new.dat
index eb078dc6cb8d3ce4acc54698d6c44b6c68c9e343..f4fad239acc6e30191fd33ceebec8ba5d4a830a0 100644
GIT binary patch
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