Python Course

Author: Brar21

File.py

@@ -1,8 +1,28 @@
 # with file I/O read file name "myInfo.txt" how?
 #let see example
 
-data=open("myInfo.txt",'r') # "r" work as read command for file.
+#data=open("myInfo.txt",'r') # "r" work as read command for file.
+#one another way to read file 
+data=open("myInfo.txt") #like with this  syntan it will take read command by default.
 info=data.read()
-
 print(info)
-data.close()# here we are asking to computer to after read this file just close thia function
+data.close()# here we are asking to computer to after read this file just close thia function
+
+# if you want to read only limted chractors from file
+
+limit=open('myInfo.txt')
+prt=limit.read(4) # this will print only "name" word
+print(prt) #you got only Four word from file.
+limit.close()
+
+# Read only first line ".readline()"
+line=open("myInfo.txt")
+printLine=line.readline() #this print only first line of file 
+print(printLine)
+# for sencond line you have to write this function again
+printLine=line.readline() #this print only seconed line of file 
+print(printLine)
+# for third line you have to write this function again
+printLine=line.readline() #this print only first line of file 
+print(printLine)
+line.close()

README.md

@@ -489,4 +489,34 @@
         ```
            open("file_name","command")
         ```
-        **command can be - read, write, update and delete**
+        **command can be - read, write, update and delete**
+
+       2. Functions to "read" a file
+          1. ".read()" to read all content.
+          ```
+            data=open("file_name","r")
+            info=data.read()
+            print(info)
+            data.close()
+          ```
+          or 
+             ```
+            data=open("file_name")
+            info=data.read()
+            print(info)
+            data.close()
+            ```
+          2. ".read(value)" value for how much words you want to read
+            ```
+            data=open("file_name")
+            info=data.read(5)
+            print(info)
+            data.close()
+             ```
+          3. ".readline()" function will print every time one new line
+          ```
+             file=open("myInfo.txt")
+             letRead=file.readline()
+             print(letRead)
+             file.close()
+          ``` 

myInfo.txt

@@ -1 +1,3 @@
-name:varinder singh
+name: Varinder singh
+address: Punjab,India
+city: Nabha