Pybricks
Print a table of some UTF-8 characters #1882
Replies: 1 comment 7 replies
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Hmm... the builtin |
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Can we manage the memory claim? To be honest I could not get this program running without chatGPTs help. |
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pybricks/pybricks-micropython#271 for testing. |
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MoveHubbuild 3602 has 3940 bytes free in the movehub, the same as the previous build I ran. The movehub does not print smileys (on build 3602) but "� " From this snippet the movehub at buld 3602 gets a typeError on from pybricks import version
print(version)
test_chr = "😀"
print("smiley", test_chr, "\t", bytes(test_chr, "utf-8"), end="\t")
try:
print(ord(test_chr))
except:
print("ord(test_chr) failed:")
for c in "😀😃😄":
print(c, end=" ")
print()CityHub:cityhub on build 3596 and 3602: Nice. TechnicHub:Memory diff is no that much compared to 3.6.0b2 PrimeHub:diff in memory between build 3601 and 3601, negletable: |
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@BertLindeman, appreciate the feedback as always. In the future, would you be ok to share the first characters of the git hash, e.g. |
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PR 271 enable unicode support is merged. UTF-8 support is only enabled on the Prime / Inventor / essential hubs (at the moment). Changes:
print utf-8 table program for my memory: print_utf8_characters_published.pyfrom pybricks.tools import wait
# from micropython import mem_info, stack_use
try:
import gc
print("gc module is available.")
GC_AVAILABLE = True
except ImportError:
print("gc module is not available.")
GC_AVAILABLE = False
IGNORE_CHARS = {
0x00ad, # Soft hyphen
0x200B, # Zero Width Space
0x200D, # Zero Width Joiner
0x200E, # Left-to-Right Mark
0x200F, # Right-to-Left Mark
}
IGNORE_RANGES = [
(0x0000, 0x001F), # C0 Controls
(0x007F, 0x009F), # C1 Controls
# (0xD800, 0xDFFF), # Surrogates skipped in the code
(0xFDD0, 0xFDEF), # Non-characters in BMP
(0xE000, 0xF8FF), # BMP Private Use Area
(0xF0000, 0xFFFFD), # Private Use-A
(0x100000, 0x10FFFD), # Private Use-B
]
IGNORE_RANGES.extend((plane * 0x10000 + 0xFFFE, plane * 0x10000 + 0xFFFF) for plane in range(17)) # Plane-end Non-characters
def is_ignored(code):
"""Check if a code point is in any ignored range."""
return any(start <= code <= end for start, end in IGNORE_RANGES)
def print_utf8_table(start_code, end_code):
print(f"{start_code:6} {start_code:#08x} | ", end=" ")
for code in range(start_code, end_code):
# Skip invalid Unicode code points (here, surrogates (utf16))
# if code >= 0xD800 and code <= 0xDFFF:
if 0xD800 <= code <= 0xDFFF:
print('.', end=" ") # Print "." for surrogate pairs
continue
# Check if character should be ignored
if code not in IGNORE_CHARS and not is_ignored(code):
try:
print(chr(code), end=" ")
except ValueError: # Catch invalid characters (e.g., unsupported code points)
print('.', end=" ") # Print ". " for invalid characters
else:
print('.', end=" ") # Print ". " for ignored characters
# prevent a memory shortage by running garbage collect.
# have seen a shortage of 2560 bytes after Free: 154480
# and sometimes no problem after free 4688 auto gc.collect then had 228560 free.
if GC_AVAILABLE:
mem_free = gc.mem_free()
print(f" | Free:{mem_free:>7}", end="")
if mem_free < 160000:
gc.collect()
mem_free = gc.mem_free()
print(f" > Free:{mem_free:>7}")
else:
print()
else:
print(' |')
CHARS_PER_LINE = 32
RANGES = [
( 0x80, 0xFF), # noqa # control characters
( 0x2190, 0x21FF), # noqa # Miscellaneous Symbols (e.g., ☀☂)
( 0x23C0, 0x25FF), # noqa # Misc. Technical
( 0x2600, 0x26FF), # noqa # Arrows
(0x1F600, 0x1F64F), # noqa # Emoticons
(0x1F300, 0x1F5FF), # noqa # Pictographs
(0x1F680, 0x1F6FF), # noqa # Transport (e.g., 🚀)
(0x1F700, 0x1F7FF), # noqa # Alchemical symbols
(0x1F900, 0x1F9FF), # noqa # Supplemental Symbols and Pictographs
]
# tests:
# RANGES = [
# # ( 0xA0, 0xAF),
# # ( 0x23C0, 0x25FF), # Misc. Technical
# # ( 0x2600, 0x26FF), # Arrows
# (0x1F700, 0x1F7FF), # noqa # Alchemical symbols
# ]
# CHARS_PER_LINE = 8
for start, end in RANGES:
for i in range(start, end, CHARS_PER_LINE):
print_utf8_table(i, i + CHARS_PER_LINE)
print('⏰')
wait(1000)Tested with git-hash 40cc0613 Bert |
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Related to issue #1743
Made a program to easily print some UTF-8 graphics.
chatGPT helped to get the code-points utf8 encoded.
And in the end I needed to help chatGPT to get it done in pybricks micropython. 😄
A hint you probably all know: you can collaps a part of the program
by pressing the down-arrow between the line of code and the sequence number.
And re-click to show again.
Nice not to have to scroll past the long
ifwith the excluded ranges.The program (click to show)
Part of the output:
Enjoy,
Bert
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