How to write SVG file instead of broken (blurry) matplotlib.

svg_write_streamlit.py

def svg_write(fig, center=True):
    """
    Renders a matplotlib figure object to SVG and embedd it as base64.
    Disable center to left-margin align like other objects.

    Shamelessly taken from:
    https://discuss.streamlit.io/t/display-svg/172
    """
    # Save to stringIO instead of file
    imgdata = StringIO()
    fig.savefig(imgdata, format="svg")

    # Retrieve saved string
    imgdata.seek(0)
    svg_string = imgdata.getvalue()

    # Encode as base 64
    b64 = base64.b64encode(svg_string.encode("utf-8")).decode("utf-8")

    # Add some CSS on top
    css_justify = "center" if center else "left"
    css = f'<p style="text-align:center; display: flex; justify-content: {css_justify};">'
    html = f'{css}<img src="data:image/svg+xml;base64,{b64}"/>'

    # Write the HTML
    st.write(html, unsafe_allow_html=True)