diff --git a/main.py b/main.py
new file mode 100644
index 0000000..1e3e6d5
--- /dev/null
+++ b/main.py
@@ -0,0 +1,10 @@
+def count(phrase: str, letter: str) -> int:
+    count = 0
+    for char in phrase:
+        if char.lower() == letter.lower():
+            count += 1
+    return count
+
+
+print(count('hello world', letter='h'))
+count('hello world', letter='l')
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..afff680
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,6 @@
+flake8==5.0.4
+flake8-annotations==2.9.1
+flake8-quotes==3.3.1
+flake8-variables-names==0.0.5
+pep8-naming==0.13.2
+pytest==7.1.3
\ No newline at end of file