Formatting and Decorators

def d(f):
    def n(*args):
        return '$' + str(f(*args))
    return n
@d
def p(a, t):
    return a + a*t 
print(p(100,0))

print(“%f”%x)

i. '{0:.2f}'.format(1/3.0)
ii. '%.2f'%(1/3.0)

'{0:f}, {1:2f}, {2:05.2f}'.format(1.23456, 1.23456, 1.23456)

'{a}, {0}, {abc}'.format(10, a=2.5, abc=[1, 2])

def c(f):
    def inner(*args, **kargs):
        inner.co += 1
        return f(*args, **kargs)
    inner.co = 0
    return inner
@c
def fnc():
    pass
if __name__ == '__main__':
    fnc()
    fnc()
    fnc()
    print(fnc.co)