From 736da656bc2784a0943f8108578a30f38325e4f9 Mon Sep 17 00:00:00 2001
From: Paco Hope <github@filter.paco.to>
Date: Mon, 3 Sep 2018 23:16:04 +0100
Subject: [PATCH 1/5] Use system random instead of homebrew random

---
 lib/random.py | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/lib/random.py b/lib/random.py
index d072333..e0e2ec8 100644
--- a/lib/random.py
+++ b/lib/random.py
@@ -5,33 +5,32 @@ Warning! Don't use this for anything important, it's probably biased
 
 ___license___ = "MIT"
 
-# todo: simplify this by using "urandom"
-import os
+try:
+    import urandom as sysrand
+except ImportError:
+    import random as sysrand
 
-_bigrand_bytes = 10
-_bigrand_max = pow(256, _bigrand_bytes)
+# arbitrary: max is 32-bit
+_bigrand_max = pow(2, 32)
 
 def _bigrand():
     """generates a random number between 0 (incl) and _bigrand_max (excl)"""
-    base = 0
-    for b in os.urandom(_bigrand_bytes):
-        base = (base << 8) + b
-    return base
+    return int(sysrand.getrandbits(32))
 
 def random():
     """Return the next random floating point number in the range [0.0, 1.0)."""
-    return _bigrand() / _bigrand_max
+    return sysrand.random()
 
 def randrange(start, stop=None):
     """Return a randomly selected element from range(start, stop)"""
     if stop is None:
         stop = start
         start = 0
-    return start + (_bigrand() * (stop - start) // _bigrand_max)
+    return sysrand.randrange(start, stop)
 
 def randint(start, stop):
     """Return a random integer N such that a <= N <= b."""
-    return randrange(start, stop + 1)
+    return sysrand.randint(start, stop)
 
 def shuffle(seq):
     """Shuffle the sequence x in place."""

From 6bad9c700f2c919041079780830c1a94962e8870 Mon Sep 17 00:00:00 2001
From: Paco Hope <github@filter.paco.to>
Date: Mon, 3 Sep 2018 23:40:01 +0100
Subject: [PATCH 2/5] remove unreferenced _bigrand() function

---
 lib/random.py | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/lib/random.py b/lib/random.py
index e0e2ec8..76c324e 100644
--- a/lib/random.py
+++ b/lib/random.py
@@ -10,13 +10,6 @@ try:
 except ImportError:
     import random as sysrand
 
-# arbitrary: max is 32-bit
-_bigrand_max = pow(2, 32)
-
-def _bigrand():
-    """generates a random number between 0 (incl) and _bigrand_max (excl)"""
-    return int(sysrand.getrandbits(32))
-
 def random():
     """Return the next random floating point number in the range [0.0, 1.0)."""
     return sysrand.random()

From efab551165c46f1571f7fcf775ed84c8573bfca0 Mon Sep 17 00:00:00 2001
From: Paco Hope <github@filter.paco.to>
Date: Wed, 5 Sep 2018 15:37:37 +0100
Subject: [PATCH 3/5] deleted unneeded

---
 lib/random.py | 40 ----------------------------------------
 1 file changed, 40 deletions(-)
 delete mode 100644 lib/random.py

diff --git a/lib/random.py b/lib/random.py
deleted file mode 100644
index e0e2ec8..0000000
--- a/lib/random.py
+++ /dev/null
@@ -1,40 +0,0 @@
-"""Library to generate random numbers
-
-Warning! Don't use this for anything important, it's probably biased
-"""
-
-___license___ = "MIT"
-
-try:
-    import urandom as sysrand
-except ImportError:
-    import random as sysrand
-
-# arbitrary: max is 32-bit
-_bigrand_max = pow(2, 32)
-
-def _bigrand():
-    """generates a random number between 0 (incl) and _bigrand_max (excl)"""
-    return int(sysrand.getrandbits(32))
-
-def random():
-    """Return the next random floating point number in the range [0.0, 1.0)."""
-    return sysrand.random()
-
-def randrange(start, stop=None):
-    """Return a randomly selected element from range(start, stop)"""
-    if stop is None:
-        stop = start
-        start = 0
-    return sysrand.randrange(start, stop)
-
-def randint(start, stop):
-    """Return a random integer N such that a <= N <= b."""
-    return sysrand.randint(start, stop)
-
-def shuffle(seq):
-    """Shuffle the sequence x in place."""
-    l = len(seq)
-    for i in range(l):
-        j = randrange(l)
-        seq[i], seq[j] = seq[j], seq[i]

From 9de689638888699c47841138ab700b7680c681de Mon Sep 17 00:00:00 2001
From: Paco Hope <github@filter.paco.to>
Date: Wed, 5 Sep 2018 15:38:11 +0100
Subject: [PATCH 4/5] removed random dependency, added app import

---
 snake/main.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/snake/main.py b/snake/main.py
index 13761e8..9a29891 100644
--- a/snake/main.py
+++ b/snake/main.py
@@ -3,9 +3,9 @@
 ___name___         = "Snake"
 ___license___      = "MIT"
 ___categories___   = ["Games"]
-___dependencies___ = ["dialogs", "app", "ugfx_helper", "random", "sleep", "buttons"]
+___dependencies___ = ["dialogs", "app", "ugfx_helper", "sleep", "buttons"]
 
-import math, ugfx, ugfx_helper, random, sleep, buttons
+import app, math, ugfx, ugfx_helper, random, sleep, buttons
 from tilda import Buttons
 
 ugfx_helper.init()

From 2e9aa2e345aaab0d16c57edde206dbb7270179b0 Mon Sep 17 00:00:00 2001
From: Paco Hope <github@filter.paco.to>
Date: Wed, 5 Sep 2018 15:38:33 +0100
Subject: [PATCH 5/5] Removed dependency on random

---
 3dspin/main.py       | 2 +-
 breakout/main.py     | 2 +-
 game-of-life/main.py | 2 +-
 lib/homescreen.py    | 2 +-
 lib/test_random.py   | 2 +-
 screendisco/main.py  | 2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/3dspin/main.py b/3dspin/main.py
index 4cff9f8..dd4ab78 100644
--- a/3dspin/main.py
+++ b/3dspin/main.py
@@ -3,7 +3,7 @@
 ___name___         = "3D Spin"
 ___license___      = "MIT"
 ___categories___   = ["Demo"]
-___dependencies___ = ["app", "ugfx_helper", "random", "sleep", "buttons"]
+___dependencies___ = ["app", "ugfx_helper", "sleep", "buttons"]
 
 import ugfx
 from tilda import Buttons
diff --git a/breakout/main.py b/breakout/main.py
index 5829ec4..ed5447b 100644
--- a/breakout/main.py
+++ b/breakout/main.py
@@ -3,7 +3,7 @@
 ___name___         = "Breakout"
 ___license___      = "MIT"
 ___categories___   = ["Games"]
-___dependencies___ = ["app", "ugfx_helper", "random", "buttons"]
+___dependencies___ = ["app", "ugfx_helper", "buttons"]
 
 from tilda import Buttons
 import ugfx, ugfx_helper, dialogs
diff --git a/game-of-life/main.py b/game-of-life/main.py
index 7af9a36..bb577b4 100644
--- a/game-of-life/main.py
+++ b/game-of-life/main.py
@@ -3,7 +3,7 @@
 ___name___         = "Conway game of life"
 ___license___      = "MIT"
 ___categories___   = ["Games"]
-___dependencies___ = ["app", "ugfx_helper", "random", "sleep", "buttons"]
+___dependencies___ = ["app", "ugfx_helper", "sleep", "buttons"]
 
 import app, ugfx, ugfx_helper, buttons, sleep, time, random
 from tilda import Buttons
diff --git a/lib/homescreen.py b/lib/homescreen.py
index 8702735..5afa460 100644
--- a/lib/homescreen.py
+++ b/lib/homescreen.py
@@ -17,7 +17,7 @@ They also *may*:
 """
 
 ___license___      = "MIT"
-___dependencies___ = ["database", "buttons", "random", "app", "sleep", "ugfx_helper", "wifi", "sim800"]
+___dependencies___ = ["database", "buttons", "app", "sleep", "ugfx_helper", "wifi", "sim800"]
 
 import database, ugfx, random, buttons, tilda, sleep, ugfx_helper, wifi, time, sim800
 from app import App
diff --git a/lib/test_random.py b/lib/test_random.py
index 5402caa..6c60dad 100644
--- a/lib/test_random.py
+++ b/lib/test_random.py
@@ -1,7 +1,7 @@
 """Tests for random lib"""
 
 ___license___      = "MIT"
-___dependencies___ = ["upip:unittest", "random"]
+___dependencies___ = ["upip:unittest"]
 
 import unittest
 from random import *
diff --git a/screendisco/main.py b/screendisco/main.py
index 0615914..5fa8dce 100644
--- a/screendisco/main.py
+++ b/screendisco/main.py
@@ -3,7 +3,7 @@
 """
 ___name___         = "Screen Party"
 ___license___      = "MIT"
-___dependencies___ = ["ugfx_helper", "sleep", "random"]
+___dependencies___ = ["ugfx_helper", "sleep"]
 ___categories___   = ["Homescreens"]
 ___bootstrapped___ = False