python

Author: vishalsiingh

day31(readwritelines).py

@@ -0,0 +1,16 @@
+f = open('marks.txt', 'r')
+i = 0
+while True:
+  i = i + 1
+  line = f.readline()
+  if not line:
+    break
+  
+  m1 = int(line.split(",")[0])
+  m2 = int(line.split(",")[1])
+  m3 = int(line.split(",")[2])
+  print(f"Marks of student {i} in Maths is: {m1*2}")
+  print(f"Marks of student {i} in English is: {m2*2}")
+  print(f"Marks of student {i} in SST is: {m3*2}")
+
+  print(line)

day32(seek tell).py

@@ -0,0 +1,14 @@
+# with open('file.txt','w') as f:
+#     print(f)   # use kiye naya text file crate krne ke liye 
+
+    # NOW
+
+with open('file.txt','r') as f:
+    print(type(f))
+    f.seek(11) #move 11 byte in the file 
+    print(f.tell())
+    data =f.read(5) # wha se next 5 character read karega 
+    print(data)
+
+
+ 

day33(truncate).py

@@ -0,0 +1,4 @@
+with open ('filetru.txt','w') as f :
+    print(f)
+    f.write('Hello World!')
+    f.truncate(5) # ye 5 byte tk hi truncate kr dega jo v wirte karana hoga so 

file.txt

@@ -0,0 +1 @@
+123456789tetvihsalsoinghkashyap

filetru.txt

@@ -0,0 +1 @@
+Hello

marks.txt

@@ -0,0 +1,3 @@
+24,45,67
+89,67,20
+90,99,89

myfile.txt

@@ -1,2 +1,3 @@
-I am a good guy pursuing  B-Tech from KIIT university 
-Hello, world!Hello, world!Hello, world!hey i mm inside the environmentHello, world!hey i mm inside the environment
+23,34,67
+78,90,23
+89,67,30