diff --git a/letter_digit.py b/letter_digit.py
index e69de29..6706fe0 100644
--- a/letter_digit.py
+++ b/letter_digit.py
@@ -0,0 +1,22 @@
+# Calculate the number of letters and digits\pair_len = int(raw_input("Len of pair: "))
+str_eg = 'world234'
+
+def letterAndDigit(stri):
+    str_eg2 = list(stri)
+    dig = 0
+    letter = 0
+    for e in str_eg2:
+        if (e.isdigit() == True):
+            dig = dig + 1
+        elif (e.isalpha() == True):
+            letter = letter + 1
+        else:
+            continue
+    x = [dig, letter]
+    ans = {}
+    ans["DIGITS"] = dig
+    ans["LETTERS"] = letter
+    print (ans)
+    return ans
+
+letterAndDigit(str_eg)
diff --git a/letter_digit.pyc b/letter_digit.pyc
new file mode 100644
index 0000000..b7c49b5
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diff --git a/tests/__init__.pyc b/tests/__init__.pyc
new file mode 100644
index 0000000..b205e51
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diff --git a/tests/test_letterAndDigit.pyc b/tests/test_letterAndDigit.pyc
new file mode 100644
index 0000000..e4b51e0
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