How could I take input like
A=30 B=10
Your query is not so clear that how output is given.
1). if 30 and 10 have a space between them then
A,B = [int(x) for x in input().split()] or equal to map(int,input().split())
input().split(’ ‘) splita strings with ’ ’ and int(x) for x or map(int, )convert those strings to integers.
extra input().split(’,’) can be used to take 2,3 input.
2). if 30 and 10 are in different lines then
A = int(input())
B = int(input())
go to additional link Taking multiple inputs from user in Python  GeeksforGeeks
Fastest answer (in terms of runtime):
import sys
a,b = list(map(int, sys.stdin.readline().split()))
Naive method:
 Read an Entire line as String:
line = input()
 Read a line containing a Single Integer
num = int(input())
 Read a pair of Space separated Integers
num1, num2 = map(int, input().split())
 Read a triple of Space separated Integers
num1, num2, num3 = map(int, input().split())
 Read a line containing a single, real number
f = float(input())
 Read a pair of space separated Real Numbers
f1, f2 = map(float, input().split())
 Read a pair of space separated Strings
s1, s2 = map(str, input().split())
 Read a list of Integers
arr = list(map(int, input().split()))
 (Trickier) Read a line containing a string and an Integer
s, num = map(str, input().split()) # Consider both of them as Strings
num = int(num) # Convert num to int
Efficient Method (Recommended for Fast IO):
 Declaration part
from sys import stdin, stdout
read = stdin.readline # read holds the reference to function
 Read an Entire line as String:
line = read()
 Read a line containing a Single Integer
num = int(read())
 Read a pair of Space Separated Integers
num1, num2 = map(int, read().split())
 Read a list of Space separated Integers
arr = list(map(int, read().split()))
And so on. If you still need help, feel free to ask.
Using a list and then unpacking it into two or more integers would add a very little overhead.
The following is little better than the above one.
a, b = map(int, stdin.readline().split())
Nice
Thanks
a,b=input().split()
_,a=a.split("=")
_,b=b.split("=")
After doing this convert both the value in integer using int()
I will try to cover various input types.

Single input as string
S
s = input()

Multiple strings on different line
S_{1}
S_{2}s1 = input()
s2 = input()

Multiple space separated strings on same line
S_{1} S_{2}
s1, s2 = tuple(input().split())

Single input as integer
N
n = int(input())

Multiple integers on different line
N_{1}
N_{2}n1 = int(input())
n2 = int(input())

Multiple space separated integers on same line
N_{1} N_{2}
n1,n2 = map(int,input().split())

Array of space separated integers 
A_{1}\ A_{2}\ A_{3}\ A_{4}\ A_{5}\ \cdots \ A_{N}
A = list(map(int,input().split()))

Matrix of integers as input
A_{11}\ A_{12}\ A_{13} \cdots A_{1n}
A_{21}\ A_{22}\ A_{23} \cdots A_{2n}
\vdots\ \ \ \ \ \ \ \vdots \ \ \ \ \ \ \vdots \ \ \ \ \ \ \vdots \ \ \ \ \ \ \vdots
A_{m1}\ A_{m2}\ A_{m3} \cdots A_{mn}grid = [list(map(int,input().split())) for i in range m]
Something about the split method
It is the method available for string (and so it is applied on strings only) which returns a list of string which are separated on the basis of delimiter(the default argument is whitespace).
Map function 
We are using map function here because once we have created a list of strings using the split method now we want to change their type. Map takes arguments as function and an iterable (here int is a function and the list of strings is the iterable object).