x=23
y=34
str1="HELLO GERMANY how are you? x owe me {} y owe me {}"

print(str1.count("o"))
# print(str1.format(x,y))
#
# print(str1.center(100,"o").format(x,y))

# print(len(str1))
# print(str1[0:5])
# print(str1[24])
# #
# # print("hello" in str1)
# # print("G" not in str1)
# # print ("how" in str1)
#
# # using if
# if "how" in str1:
#     print("yes")
#
# print(str1.index("G"))
# print(str1.isalnum())