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import streamlit as st |
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def convert_weight(value, from_unit, to_unit): |
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conversions = { |
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'g': {'g': 1, 'kg': 0.001, 'mg': 1000, 'lb': 0.00220462, 'oz': 0.035274}, |
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'kg': {'kg': 1, 'g': 1000, 'mg': 1e6, 'lb': 2.20462, 'oz': 35.274}, |
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'mg': {'mg': 1, 'g': 0.001, 'kg': 1e-6, 'lb': 2.20462e-6, 'oz': 3.5274e-5}, |
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'lb': {'lb': 1, 'kg': 0.453592, 'g': 453.592, 'oz': 16, 'mg': 453592}, |
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'oz': {'oz': 1, 'g': 28.3495, 'kg': 0.0283495, 'lb': 0.0625, 'mg': 28349.5} |
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} |
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return value * conversions[from_unit][to_unit] |
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def convert_length(value, from_unit, to_unit): |
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conversions = { |
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'meters': {'meters': 1, 'yards': 1.09361}, |
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'yards': {'yards': 1, 'meters': 0.9144} |
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} |
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return value * conversions[from_unit][to_unit] |
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direct_systems = { |
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'Tex': {'weight_unit': 'g', 'length_unit': 'meters', 'denominator': 1000}, |
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'Decitex': {'weight_unit': 'g', 'length_unit': 'meters', 'denominator': 10000}, |
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'Millitex': {'weight_unit': 'mg', 'length_unit': 'meters', 'denominator': 1000}, |
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'Kilotex': {'weight_unit': 'kg', 'length_unit': 'meters', 'denominator': 1000}, |
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'Denier': {'weight_unit': 'g', 'length_unit': 'meters', 'denominator': 9000}, |
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'Spindle': {'weight_unit': 'lb', 'length_unit': 'yards', 'denominator': 14400}, |
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} |
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indirect_systems = { |
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'English Cotton': {'length_per_hank': 840, 'length_unit': 'yards', |
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'weight_per_unit': 1, 'weight_unit': 'lb'}, |
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'French Cotton': {'length_per_hank': 1000, 'length_unit': 'meters', |
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'weight_per_unit': 1, 'weight_unit': 'kg'}, |
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'Worsted': {'length_per_hank': 560, 'length_unit': 'yards', |
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'weight_per_unit': 1, 'weight_unit': 'lb'}, |
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'Linen (Wet spun)': {'length_per_hank': 300, 'length_unit': 'yards', |
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'weight_per_unit': 1, 'weight_unit': 'lb'}, |
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'Metric': {'length_per_hank': 1000, 'length_unit': 'meters', |
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'weight_per_unit': 1, 'weight_unit': 'kg'}, |
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'Woolen- Yorkshire Skein': {'length_per_hank': 1536, 'length_unit': 'yards', |
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'weight_per_unit': 6, 'weight_unit': 'lb'}, |
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} |
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st.title('Universal Yarn Count Calculator') |
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system_type = st.radio("Select Count System Type", ['Direct', 'Indirect']) |
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if system_type == 'Direct': |
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selected_system = st.selectbox('Select Direct System', list(direct_systems.keys())) |
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params = direct_systems[selected_system] |
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else: |
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selected_system = st.selectbox('Select Indirect System', list(indirect_systems.keys())) |
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params = indirect_systems[selected_system] |
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col1, col2 = st.columns(2) |
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with col1: |
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length = st.number_input('Length', min_value=0.0, value=1000.0, step=0.1) |
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length_unit = st.selectbox('Length Unit', ['meters', 'yards']) |
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with col2: |
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weight = st.number_input('Weight', min_value=0.0, value=1.0, step=0.1) |
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weight_unit = st.selectbox('Weight Unit', ['g', 'kg', 'mg', 'lb', 'oz']) |
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if st.button('Calculate'): |
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try: |
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converted_length = convert_length(length, length_unit, params['length_unit']) |
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converted_weight = convert_weight(weight, weight_unit, params['weight_unit']) |
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if system_type == 'Direct': |
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denominator = params['denominator'] |
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if converted_length <= 0: |
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st.error("Length must be greater than zero") |
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else: |
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count = (converted_weight * denominator) / converted_length |
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result = f"**{selected_system} Count**: {count:.2f}" |
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else: |
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lph = params['length_per_hank'] |
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wpu = params['weight_per_unit'] |
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if converted_weight <= 0: |
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st.error("Weight must be greater than zero") |
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else: |
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count = (converted_length * wpu) / (converted_weight * lph) |
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result = f"**{selected_system} Count**: {count:.2f}'s" |
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st.success(result) |
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except ZeroDivisionError: |
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st.error("Cannot divide by zero - check your input values") |
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except Exception as e: |
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st.error(f"Error in calculation: {str(e)}") |
