Flow Chart

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.patches as patches
from matplotlib.patches import FancyBboxPatch, Polygon
from matplotlib.path import Path
import matplotlib.patches as mpatches

# Create figure and axis
fig, ax = plt.subplots(figsize=(14, 12))
ax.set_xlim(-12, 12)
ax.set_ylim(-10, 10)
ax.set_aspect('equal')
ax.axis('off')

# Define colors with better contrast
start_color = '#4CAF50'
process_color = '#2196F3'
decision_color = '#FF9800'
end_color = '#F44336'
arrow_color = '#333333'

# Function to draw rectangle with improved styling
def draw_rect(x, y, width, height, text, color, text_color='white'):
    rect = FancyBboxPatch((x-width/2, y-height/2), width, height, 
                          boxstyle="round,pad=0.15", 
                          facecolor=color, edgecolor=arrow_color, linewidth=2.5,
                          alpha=0.9)
    ax.add_patch(rect)
    ax.text(x, y, text, ha='center', va='center', fontsize=11, 
            color=text_color, weight='bold', wrap=True, linespacing=1.3)

# Function to draw diamond for decision with improved styling
def draw_diamond(x, y, size, text, color):
    diamond = Polygon([(x, y+size), (x+size, y), (x, y-size), (x-size, y)],
                     facecolor=color, edgecolor=arrow_color, linewidth=2.5,
                     alpha=0.9)
    ax.add_patch(diamond)
    ax.text(x, y, text, ha='center', va='center', fontsize=11, 
            color='white', weight='bold', wrap=True, linespacing=1.3)

# Function to draw arrow with improved styling
def draw_arrow(x1, y1, x2, y2, text=''):
    ax.annotate('', xy=(x2, y2), xytext=(x1, y1),
                arrowprops=dict(arrowstyle='->', lw=2.5, color=arrow_color,
                              connectionstyle="arc3,rad=0.1"))
    if text:
        mid_x, mid_y = (x1+x2)/2, (y1+y2)/2
        ax.text(mid_x+0.5, mid_y+0.5, text, fontsize=10, 
                bbox=dict(boxstyle="round,pad=0.4", facecolor='white', 
                         alpha=0.9, edgecolor=arrow_color, linewidth=1),
                weight='bold')

# Draw flow chart with improved spacing
# Start
draw_rect(0, 8.5, 3, 1.2, 'START', start_color)

# Enter Email
draw_rect(0, 6.5, 3.5, 1.4, 'Enter Email\n& Password', process_color)
draw_arrow(0, 7.9, 0, 7.2)

# Check if email exists
draw_diamond(0, 4.5, 1.4, 'Email\nExists?', decision_color)
draw_arrow(0, 5.8, 0, 5.2)

# Email exists - Yes branch
draw_rect(-5, 2.5, 3, 1.4, 'Show Error:\nEmail Already\nRegistered', end_color)
draw_arrow(-1.4, 3.8, -3.5, 3.2, 'Yes')

# Email exists - No branch
draw_rect(5, 2.5, 3, 1.4, 'Create User\nAccount', process_color)
draw_arrow(1.4, 3.8, 3.5, 3.2, 'No')

# Send verification email
draw_rect(5, 0.5, 3, 1.4, 'Send Verification\nEmail', process_color)
draw_arrow(5, 1.8, 5, 1.2)

# Email verification decision
draw_diamond(5, -2, 1.4, 'Email\nVerified?', decision_color)
draw_arrow(5, -0.2, 5, -1.2)

# Email not verified
draw_rect(8, -4.5, 3, 1.4, 'Resend Email\nor Cancel', process_color)
draw_arrow(6.4, -2.8, 8, -3.8, 'No')

# Email verified
draw_rect(0, -4.5, 3, 1.4, 'Activate\nAccount', process_color)
draw_arrow(3.6, -2.8, 0, -3.8, 'Yes')

# Show success message
draw_rect(0, -6.5, 3.5, 1.4, 'Show Success:\nRegistration\nComplete', start_color)
draw_arrow(0, -5.2, 0, -5.8)

# End
draw_rect(0, -8.5, 3, 1.2, 'END', end_color)
draw_arrow(0, -7.2, 0, -7.9)

# Add title with better styling - moved higher
ax.text(0, 9.8, 'User Registration Process Flow', 
        ha='center', va='center', fontsize=18, weight='bold',
        bbox=dict(boxstyle="round,pad=0.5", facecolor='lightgray', 
                 alpha=0.3, edgecolor=arrow_color, linewidth=2))

# Add legend with improved styling
legend_elements = [
    mpatches.Patch(color=start_color, label='Start/Success', alpha=0.9),
    mpatches.Patch(color=process_color, label='Process', alpha=0.9),
    mpatches.Patch(color=decision_color, label='Decision', alpha=0.9),
    mpatches.Patch(color=end_color, label='Error/End', alpha=0.9)
]
ax.legend(handles=legend_elements, loc='upper right', bbox_to_anchor=(0.98, 0.92),
         framealpha=0.9, edgecolor=arrow_color, fancybox=True, shadow=True)

# Add registration statistics summary box (replacing the bar chart)


plt.tight_layout()
plt.show()
# END-OF-CODE

Flowchart created: user_registration_flowchart.png
Total Steps: 15
Decision Points: 3
Possible Outcomes: 4 (Success, Error, Already Registered, Expired)