Initial data commit

Task/Variable-length-quantity/Python/variable-length-quantity-1.py

@@ -0,0 +1,23 @@
+def tobits(n, _group=8, _sep='_', _pad=False):
+    'Express n as binary bits with separator'
+    bits = '{0:b}'.format(n)[::-1]
+    if _pad:
+        bits = '{0:0{1}b}'.format(n,
+                                  ((_group+len(bits)-1)//_group)*_group)[::-1]
+        answer = _sep.join(bits[i:i+_group]
+                                 for i in range(0, len(bits), _group))[::-1]
+        answer = '0'*(len(_sep)-1) + answer
+    else:
+        answer = _sep.join(bits[i:i+_group]
+                           for i in range(0, len(bits), _group))[::-1]
+    return answer
+
+def tovlq(n):
+    return tobits(n, _group=7, _sep='1_', _pad=True)
+
+def toint(vlq):
+    return int(''.join(vlq.split('_1')), 2)
+
+def vlqsend(vlq):
+    for i, byte in enumerate(vlq.split('_')[::-1]):
+        print('Sent byte {0:3}: {1:#04x}'.format(i, int(byte,2)))