Interations

3_digital_signatures

@@ -0,0 +1,26 @@
+###    Digital Signatures    ###
+
+from helpers import mainnet,testnet
+from pprint import pprint
+
+#sign and verify messages like this: signmessage "address" "message"
+
+#First we have to get an address:
+address = testnet.getnewaddress('','legacy')
+print(f"Address created with private key is:{address}")
+
+#Create our message. Just a basic string
+msg = 'this is a message'
+print(f"Message is:{msg}")
+
+#Create the signature by signing the address with a message. It returns you a signature
+signature = testnet.signmessage(address, msg)
+print(f"Signature created with address for the message {msg} is:{signature}")
+
+#Verify that our signature is valid with my address for 'my message' msg
+verified = testnet.verifymessage(address, signature, 'this is a message')
+print(f"Verified?:{verified}")
+
+#If you try the worng msg to sign, it will print false.
+verified2 = testnet.verifymessage(address, signature, 'this is a message too')
+print(f"Verified?:{verified2}")

bitcoin_blockreward_calculator.py

@@ -2,7 +2,7 @@ from helpers import mainnet
 from decimal import Decimal
 
 def calculate_bitcoin_cycle_and_block_reward():
-    #This little program tells you the bitcoin's cycle count and the bitcoin block reward amount
+    #This little program gives the bitcoin's cycle count and the bitcoin block reward amount
     INITIAL_SUBSIDY = Decimal(50)
     BLOCKS_PER_HALVENING = 210000
     last_block = mainnet.getblockchaininfo()["blocks"]

my2.py

@@ -0,0 +1,24 @@
+"""
+_ = set(map(int, input().split()))
+arr = input().split()
+s1 = set(map(int, input().split()))
+s2 = set(map(int, input().split()))
+
+print(s1)
+print(s2)
+print(s3)
+print(sum([(i in s1)-(i in s2) for i in arr]))
+
+n, m = raw_input().split()
+
+sc_ar = raw_input().split()
+
+A = set(raw_input().split())
+B = set(raw_input().split())
+print sum([(i in A) - (i in B) for i in sc_ar])
+"""
+A = set(input().split())
+B = set(input().split())
+print(A)
+print(B)
+print(A.issuperset(B))