sleep: Add sleep.py

Author: Expertcoderz

src/sleep.py

@@ -0,0 +1,42 @@
+#!/usr/bin/python3
+
+import sys
+import time
+from decimal import Decimal
+from optparse import OptionParser
+
+SUFFIXES = {"s": 1, "m": 60, "h": 60 * 60, "d": 24 * 60 * 60}
+
+
+def sleep(total_secs: Decimal):
+    try:
+        time.sleep(float(total_secs))
+    except KeyboardInterrupt:
+        print()
+        sys.exit(130)
+
+
+if __name__ == "__main__":
+    parser = OptionParser(
+        usage="Usage: %prog DURATION[SUFFIX]...",
+        description=(
+            "Delay for the sum of each DURATION."
+            f" SUFFIX may be one of the following: {", ".join(SUFFIXES.keys())}."
+        ),
+        add_help_option=False,
+    )
+    parser.add_option("--help", action="help", help="show usage information and exit")
+
+    _, args = parser.parse_args()
+
+    total_secs = Decimal()
+
+    for spec in args:
+        if spec[-1].isdecimal():
+            total_secs += Decimal(spec)
+        else:
+            if not (multiplier := SUFFIXES.get(spec[-1])):
+                parser.error(f"invalid duration: {spec}")
+            total_secs += Decimal(spec[:-1]) * multiplier
+
+    sleep(total_secs)