[71] | 1 | #!/usr/bin/python |
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| 2 | import time |
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| 3 | |
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| 4 | from rgbkbd.core import StaticLighting, KeyboardMode, EventHandler |
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| 5 | from rgbkbd.color import Color, Colors |
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| 6 | from rgbkbd.geometry import Keys |
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| 7 | |
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| 8 | |
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| 9 | # Lighting animation |
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| 10 | class TypingSpeedAnimation(EventHandler): |
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| 11 | """Displays typing speeds (current, peak, sustained) in 10's of WPM along |
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| 12 | the number row of keys. |
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| 13 | |
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| 14 | Current speed is shown by a bar of white keys with a fading effect. |
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| 15 | Peak speed is shown by a single yellow key, unless it exceeds the width of |
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| 16 | the bar, in which case it will show as red on the highest value key. |
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| 17 | Sustained speed is shown by a single green key, unless it exceeds the width |
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| 18 | of the bar, in which case it will be shown as a single blue key on the |
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| 19 | highest value key. |
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| 20 | When there is a conflict on colors to display, the sustained value |
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| 21 | overrides the peak value which overrides the current value. |
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| 22 | """ |
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| 23 | tick_rate = 0.1 |
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| 24 | light_decay_seconds = 0.3 |
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| 25 | # Number of seconds of data to use for the current speed value |
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| 26 | running_avg_seconds = 2 |
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| 27 | # Number of seconds of current speed in which to track peak speed |
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| 28 | peak_seconds = 10 |
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| 29 | # Number of seconds to use for the sustained speed. The intention is that |
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| 30 | # this should be long enough time that it doesn't vary much on bursts of |
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| 31 | # keystrokes. It should reflect what you would be doing if you were typing |
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| 32 | # non-stop such as composing text or doing data entry. |
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| 33 | sustained_avg_seconds = 60 |
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| 34 | # Keys to use for the display of typing speed. |
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| 35 | # '1' = >=10WPM, '2' = >=20WPM, ... '0' = >=100WPM, '=' = >=120WPM |
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| 36 | # So when the '=' key goes red, that means you've peaked at over 130WPM; |
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| 37 | # and if it goes blue, you have sustained over 130WPM for at least a |
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| 38 | # minute. |
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| 39 | display_bar = list("1234567890") + ["minus", "equal"] |
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| 40 | |
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| 41 | def __init__(self, keyboard): |
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| 42 | super(TypingSpeedAnimation, self).__init__(keyboard) |
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| 43 | self.last_tick = time.time() |
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| 44 | self.key_history = {} |
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| 45 | |
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| 46 | def tick(self): |
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| 47 | """Handler for tick events""" |
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| 48 | # Display in units of 10WPM so we can represent a reasonable |
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| 49 | # touch-typing range of WPM |
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| 50 | self.display_rates([r/10. for r in self.calc_wpm_rates()]) |
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| 51 | |
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| 52 | def event(self, key, state): |
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| 53 | """Handler for key events""" |
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| 54 | #print "event: %s %s" % (key, state) |
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| 55 | now = round(time.time(), 1) # tenth-second granularity |
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| 56 | if state == '+': |
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| 57 | keystrokes = self.key_history.get(now, 0) |
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| 58 | if key in ['bspace', 'del']: |
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| 59 | delta = -1 |
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| 60 | elif key in Keys.TYPING: |
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| 61 | delta = 1 |
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| 62 | else: |
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| 63 | delta = 0 |
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| 64 | self.key_history[now] = keystrokes + delta |
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| 65 | self.tick() |
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| 66 | |
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| 67 | def calc_cpm_rates(self): |
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| 68 | """Returns a list of rates in characters per minute. The lowest index |
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| 69 | is the most recent rate. |
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| 70 | """ |
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| 71 | seconds_of_history = max(self.running_avg_seconds + max(self.light_decay_seconds, self.peak_seconds), self.sustained_avg_seconds+1) |
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| 72 | now = time.time() |
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| 73 | total_keystrokes = [0,] * int(seconds_of_history / self.tick_rate) |
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| 74 | |
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| 75 | for timestamp, keystrokes in sorted(self.key_history.items()): |
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| 76 | if timestamp <= now - seconds_of_history: |
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| 77 | # Age off old data |
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| 78 | # We can modify the underlying dictionary because we have |
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| 79 | # created a list of the items in the setup of the for loop |
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| 80 | del self.key_history[timestamp] |
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| 81 | else: # This one counts |
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| 82 | age = now-timestamp # how many seconds old it is |
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| 83 | bucket = int(age / self.tick_rate) |
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| 84 | total_keystrokes[bucket] += keystrokes |
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| 85 | return [c/self.tick_rate*60. for c in total_keystrokes] |
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| 86 | |
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| 87 | def calc_wpm_rates(self): |
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| 88 | """Returns rates in words per minute. 1 WPM is defined as 5 CPM.""" |
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| 89 | return [c/5. for c in self.calc_cpm_rates()] |
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| 90 | |
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| 91 | def running_average(self, rate_data, amount): |
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| 92 | """Utility function to calculate a running average of a given width |
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| 93 | over a set of data. |
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| 94 | """ |
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| 95 | return [sum(rate_data[n:n+amount])/amount for n in range(len(rate_data)-amount)] |
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| 96 | |
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| 97 | def display_rates(self, rate_data): |
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| 98 | """Update the keyboard lights to display the given rate data.""" |
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| 99 | # Calculate a running average of the data; otherwise the output is too |
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| 100 | # volatile; hitting a few keys in very rapid succession can make for an |
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| 101 | # misleading peak value. |
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| 102 | sustained_rate = int(max(self.running_average(rate_data, int(self.sustained_avg_seconds / self.tick_rate)) + [0])) |
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| 103 | rate_data = self.running_average(rate_data, int(self.running_avg_seconds / self.tick_rate)) |
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| 104 | |
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| 105 | #print max(rate_data), rate_data[:30], '...' # DEBUG |
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| 106 | |
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| 107 | # intensities are in the range [0-1]; an intensity for each key in the display bar |
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| 108 | intensities = [0,] * len(self.display_bar) |
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| 109 | # Iterate over the data starting at the oldest data |
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| 110 | for rate in reversed(rate_data[:int(self.light_decay_seconds/self.tick_rate)]): |
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| 111 | # linear decay |
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| 112 | intensities = [max(0.0, i-self.tick_rate/self.light_decay_seconds) for i in intensities] |
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| 113 | for i in range(min(int(rate), len(self.display_bar))): |
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| 114 | intensities[i] = 1.0 # peg the new data |
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| 115 | |
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| 116 | # Determine preliminary colors for the keys based on the current typing speed |
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| 117 | key_colors = {} |
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| 118 | for intensity, key in zip(intensities, self.display_bar): |
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| 119 | color = self.intensity_to_color(intensity) |
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| 120 | key_colors[key] = color |
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| 121 | |
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| 122 | # Indicate peak speed, if >0 |
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| 123 | peak = int(max(rate_data[:int(self.peak_seconds/self.tick_rate)])) |
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| 124 | if peak: |
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| 125 | key = self.display_bar[min(peak, len(self.display_bar))-1] |
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| 126 | if peak > len(self.display_bar): # Blow-out! |
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| 127 | color = Colors.RED |
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| 128 | else: |
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| 129 | color = Colors.YELLOW |
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| 130 | key_colors[key] = color |
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| 131 | |
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| 132 | # Indicate sustained speed, if >0 |
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| 133 | if sustained_rate: |
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| 134 | key = self.display_bar[min(sustained_rate, len(self.display_bar))-1] |
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| 135 | if sustained_rate > len(self.display_bar): # Blow-out! |
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| 136 | color = Colors.BLUE |
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| 137 | else: |
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| 138 | color = Colors.GREEN |
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| 139 | key_colors[key] = color |
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| 140 | |
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| 141 | for key, color in key_colors.items(): |
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| 142 | self.keyboard.set_keys(key, color) |
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| 143 | |
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| 144 | #print intensities, peak # DEBUG |
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| 145 | |
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| 146 | def intensity_to_color(self, intensity): |
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| 147 | """Convert intensity, a value in [0, 1], into a shade of grey.""" |
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| 148 | color_value = min(255, intensity * 256) |
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| 149 | return Color(red=color_value, green=color_value, blue=color_value) |
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| 150 | |
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| 151 | |
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| 152 | # Keyboard Mode |
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| 153 | def TypingMode(manager, keyboard): |
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| 154 | profile = [ |
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| 155 | (Keys.ALL, Color.fromstring('e0e0e0')), |
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| 156 | (Keys.HOME, Colors.BLUE), |
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| 157 | (Keys.NUM_PAD, Colors.GREEN), |
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| 158 | (Keys.FUNCTION, Colors.RED), |
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| 159 | (Keys.MEDIA, Colors.DARKCYAN), |
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| 160 | (Keys.NAV, Colors.YELLOW), |
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| 161 | (Keys.MOD, Colors.PURPLE), |
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| 162 | ("lock", Colors.BLACK), # Windows Lock key |
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| 163 | ("light", Colors.BLACK), # Light key |
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| 164 | ("caps", Colors.BLACK), # Caps Lock key |
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| 165 | ] |
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| 166 | return KeyboardMode(manager, keyboard, |
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| 167 | static_lighting=StaticLighting(keyboard, profile=profile), |
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| 168 | animations = [ |
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| 169 | TypingSpeedAnimation(keyboard), |
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| 170 | ]) |
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