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To get a reasonably large collection of traditional and simplified Chinese characters in use toady, we may use zhon:

pip install zhon

To get pinyin of a Chinese character, we use python-pinyin:

pip install pypinyin

Here a script to get pinyin initials for valid Chinese character without tones:

from zhon import cedict
from pypinyin import pinyin, Style
import yaml


def main():
    all_chars = set(cedict.all)

    ch_initials = {}
    for c in all_chars:
        ch_pinyin = pinyin(c, style=Style.NORMAL, errors='ignore')
        # if no pinyin for this char exists
        if not ch_pinyin:
            continue

        py_init = ch_pinyin[0][0][0]
        ch_initials[c] = py_init

    fname = 'zh_char_initial.yaml'
    with open(fname, 'w') as f:
        yaml.dump(ch_initials, f)


if __name__ == "__main__":
    main()