Python String Formatting Conversion Types :

Conversion                      Type Meaning

d, i   Signed integer decimal

o   Unsigned octal

u   Unsigned decimal

x           Unsigned hexadecimal (lowercase)

X   Unsigned hexadecimal (uppercase)

e   Floating-point exponential format (lowercase)

E   Floating-point exponential format (uppercase)

f, F   Floating-point decimal format

g   Same as e if exponent is greater than –4 or less than precision

G   Same as E if exponent is greater than –4 or less than precision;

c   Single character (accepts an integer or a single character string) 

r   String (converts any Python object using repr)

s           String (converts any Python object using str)