Some people think that dynamic typing is bad! This is because most of them get confused with Static Typing & Strict Typing. They think dynamic typing means 'No Type'.In Python, for example, we have strict typing, but most of times, the type is guessed by the compiler itself.

>>> a=5

>>> type(a)

int

>>> b=5.43

>>> type(b)

float

>>> c='test'

>>> type(c)

str

The best part of the fact is that you can have a complex type (e.g. Dictionary) which has different key types (despite C# or so).

>>> myDic={'test':45 , 56.7:'sd'}

>>> type(myDic.keys()[0])

str

>>>type(myDic.keys()[1])

float

>>> type(myDic['test'])

int

>>> type(myDic[56.7])

str