Python Revision Notes

11. String Operations

s = "Python"
print(s.upper())      # PYTHON
print(s[0:3])         # Pyt
print("th" in s)      # True

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12. File Handling

f = open("data.txt","w")
f.write("Hello File")
f.close()

f = open("data.txt","r")
print(f.read())
f.close()

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13. Exception Handling

try:
    a = int(input("Enter number: "))
    print(10/a)
except ZeroDivisionError:
    print("Division by zero not allowed")
except ValueError: 

print("Invalid input")