float(x)
Converts x to a floating-point number.

complex(real [,imag])
Creates a complex number.

str(x)
Converts object x to a string representation.

repr(x)
Converts object x to an expression string.

eval(str)
Evaluates a string and returns an object.

tuple(s)
Converts s to a tuple.

list(s)
Converts s to a list.

set(s)
Converts s to a set.

dict(d)
Creates a dictionary. d must be a sequence of (key,value) tuples.

frozenset(s)
Converts s to a frozen set.

chr(x)
Converts an integer to a character.

unichr(x)
Converts an integer to a Unicode character.

ord(x)
Converts a single character to its integer value.

hex(x)
Converts an integer to a hexadecimal string.

oct(x)
Converts an integer to an octal string.