Did Caeser cypher task (karan/Projects) in Python

1 files changed, 32 insertions, 0 deletions

diff --git a/Python/Beginner training/Caeser Cypher.py b/Python/Beginner training/Caeser Cypher.py
new file mode 100644
index 0000000..b951e39
--- /dev/null
+++ b/Python/Beginner training/Caeser Cypher.py
@@ -0,0 +1,32 @@
+lower = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
+upper = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']
+
+while True:
+    key = abs(int(input("Type a key (0 - 26): ")))
+    while key > 26:
+        key -= 26
+
+    msg = input("Type a message: ")
+    decoded = [] ; encoded = []
+
+    for c in msg:
+        try:
+            decoded.append(lower[lower.index(c) - key])
+            encoded.append(lower[lower.index(c) + key])
+        except:
+            try:
+                decoded.append(upper[upper.index(c) - key])
+                encoded.append(upper[upper.index(c) + key])
+            except:
+                decoded.append(c)
+                encoded.append(c)
+
+    print(end="Decoded message: ")
+    for c in decoded:
+        print(end=c)
+    print()
+
+    print(end="Encoded message: ")
+    for c in encoded:
+        print(end=c)
+    print("\n")
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