Understanding about State of functional programming

Author: sanjaypradeep

Classes/state.py

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+
+
+# Have you heard about State in Programming Language?
+
+# Very frequentlt this terminology is been used in Entity or Object Communication. 
+
+
+# Let's say we have to model a bank account with support for deposit and withdraw operations. 
+# One way to do that is by using global state
+
+balance = 0 #balance variable is global of the program, if this below snippet is inside the class, we can call as class attribute.
+
+def deposit(amount):
+    global balance
+    balance += amount
+    return balance
+
+def withdraw(amount):
+    global balance
+    balance -= amount
+    return balance
+
+sanjay = deposit(100)
+print(sanjay)
+
+# The above example is good enough only if we want to have just a single account. 
+
+# ******Things start getting complicated if want to model multiple accounts.******
+