Eval() function.md

eval() function:

eval() function is used when we have to evaluate certain expression. As eval() function is capable of taking float/int or str input & giving the resultant output in integer/float.

Syntax: eval()

  a, b, c = 5, 3, 9
  print(a+3*b-2*c) # 4

Example:

    a, b, c = 5, 3, 9
    # but if we use eval()
    output = eval(a+3*b-2*c)
    print(output) # -4
    var = eval(input("Enter a value: "))
    # Enter a value: 45.678
    print(type(var)) # <class 'float'>
    # var = eval(input("Enter value: "))
    # Enter value: Hello # invalid - Hello is not defined because eval() will treat 'Hello' as a variable