5           0 LOAD_CONST               1 ('Hello world')
              2 RETURN_VALUE
None
  9           0 LOAD_CONST               1 ('Hello world')
              2 RETURN_VALUE
None
 16           0 LOAD_CONST               1 ('Hello world ')
              2 LOAD_CONST               2 (1)
              4 FORMAT_VALUE             0
              6 BUILD_STRING             2
              8 RETURN_VALUE
None
 22           0 LOAD_CONST               1 ('Hello world ')
              2 LOAD_GLOBAL              0 (str)
              4 LOAD_GLOBAL              1 (a)
              6 CALL_FUNCTION            1
              8 BINARY_ADD
             10 RETURN_VALUE
None
 12           0 LOAD_CONST               1 ('Hello world')
              2 LOAD_CONST               2 ('bruhh')
              4 BINARY_ADD
              6 RETURN_VALUE
None

import dis


def myfn():
    return "Hello world"


def myfn1():
    return f"Hello world"

def myfn4():
    return f"Hello world" + "bruhh"


def myfn2():
    return f"Hello world {1}"


a = 1
def myfn3():
    global a
    return "Hello world " + str(a)

print(dis.dis(myfn))
print(dis.dis(myfn1))
print(dis.dis(myfn2))
print(dis.dis(myfn3))
print(dis.dis(myfn4))