diff --git a/letter_digit.py b/letter_digit.py
index e69de29..0062b71 100644
--- a/letter_digit.py
+++ b/letter_digit.py
@@ -0,0 +1,5 @@
+def letterAndDigit(str):
+    return {
+        'DIGITS': sum(c.isdigit() for c in str),
+        'LETTERS': sum(c.isalpha() for c in str)
+    }
diff --git a/letter_digit.pyc b/letter_digit.pyc
new file mode 100644
index 0000000..79264cf
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diff --git a/tests/__init__.pyc b/tests/__init__.pyc
new file mode 100644
index 0000000..a8b2291
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diff --git a/tests/test_letterAndDigit.pyc b/tests/test_letterAndDigit.pyc
new file mode 100644
index 0000000..ec28871
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