python

Author: vishalsiingh

day29(Local & Global Varibale).py

@@ -22,5 +22,5 @@ def my_function():
 
 my_function()
 print(x)  # prints 5
-print(y) # this will cause an error because y is a local variable and 
-# is not accessible outside of the function
+#print(y) # this will cause an error because y is a local variable and 
+# is not accessible outside of the function 

day30(File IO).py

@@ -0,0 +1,17 @@
+#READING A FILE
+
+# f = open('myfile.txt','r') # r - read w-write a-append   
+#                     # if w mode me aise file ko khol diya jo exist nhi krta then
+#                                  # naya file bn ke aa jaeyga
+# # # print(f)
+# text = f.read()
+# print(text)
+# f.close()
+
+# WRITING A FILE
+f=open('myfile.txt', 'a') 
+f.write('Hello, world!')
+f.close() # yha pe close krna pdta g har samay buut using WITH no need to close
+
+with open('myfile.txt','a') as f:
+ f.write("hey i mm inside the environment")

myfile.txt

@@ -0,0 +1,2 @@
+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