diff --git a/src/is_pangram.py b/src/is_pangram.py
new file mode 100644
index 0000000..843e0c7
--- /dev/null
+++ b/src/is_pangram.py
@@ -0,0 +1,9 @@
+def is_pangram(st):
+    letters_used = []
+    alphabet = set("abcdefghijklmnopqrstuvwxyz")
+    for letter in st.lower():
+        if letter in alphabet:
+            letters_used.append(letter)
+    if set(letters_used) == alphabet:
+        return True
+    return False