def get_user_parameters(): item = input("Item type: ") yarn_weight = input("Yarn weight: ") desired_width_cm = float(input("Width in cm: ")) stitch_type = input("Main stitch: ") gauge_stitches_per_10cm = float(input("Gauge sts per 10cm: ")) starting_chain = int((desired_width_cm / 10) * gauge_stitches_per_10cm) return ... Support multiple formats for different users:
"pattern_id": "bean_001", "name": "Simple Beanie", "difficulty": "beginner", "yarn_weight": "worsted", "hook_mm": 5.0, "gauge": "stitch": "sc", "stitches_per_4in": 16, "rows_per_4in": 20 , "sizes": "baby": "head_circumference_in": 16, "starting_ch": 40 , "adult": "head_circumference_in": 22, "starting_ch": 56 , "instructions": [ "step": 1, "text": "Ch starting_ch, join in round", "repeat": null , "step": 2, "text": "Round 1: sc in each ch around", "repeat": null , "step": 3, "text": "Round 2: [sc 2, inc] around", "repeat": "until diameter = 6\"" ] Crochet Pattern Program
Store user-generated patterns separately from system library. This is the heart of the program. Three main approaches: A. Template-based generation Use string templates with placeholders. Example template: Three main approaches: A
| Format | Use case | Implementation notes | |--------|----------|----------------------| | | Quick printing, forum sharing | Use monospaced font, line breaks every 10-20 sts | | HTML/CSS | Web display, mobile reading | Responsive design, collapsible sections | | PDF | Professional distribution | Use libraries like ReportLab (Python) or jsPDF (JS) | | CSV | Import into spreadsheet trackers | Rows as records, columns: Row#, Instruction, Stitch count | | Chart symbols | Visual crochet charts | Map stitches to symbols (X for sc, T for hdc) using SVG or Unicode | A modular design is best
def calculate_starting_chain(desired_width_in, gauge_stitches_per_4in): return int((desired_width_in / 4) * gauge_stitches_per_4in) Also compute row count for vertical measurements: rows_needed = (desired_height_in / 4) * gauge_rows_per_4in
Your program must handle each of these sections dynamically. A modular design is best. Suggested layers:
"stitch_id": "sc", "name": "single crochet", "abbreviation_us": "sc", "abbreviation_uk": "dc", "height_rows": 1, "width_stitches": 1, "requires_yarn_over": true, "insertion_point": "both_loops"