File size: 3,607 Bytes
2db5c7d f6ea086 2db5c7d f6ea086 2db5c7d f6ea086 2db5c7d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 |
from dotenv import load_dotenv
from PIL import Image
from typing import Optional
from io import BytesIO
import time
load_dotenv() # take environment variables from .env.
from google import genai
client = genai.Client()
# Default creative prompt
DEFAULT_PROMPT = (
"Turn the provided data visualization into a painting using an eastern art style."
)
def generate_genai_image(
input_image: Optional[Image.Image] = None,
prompt: Optional[str] = None,
model: str = "gemini-2.5-flash-image-preview",
save_to_disk: bool = False,
) -> Optional[Image.Image]:
"""Generate a stylized image from an input PIL image using Google GenAI.
Args:
input_image: Source PIL image. If None, calls weather_data_visualisation() to generate in-memory.
prompt: Optional text prompt; falls back to DEFAULT_PROMPT.
model: Model name to use.
save_to_disk: When True, saves to output/generated_image.png (no disk reads occur).
Returns:
A PIL.Image on success, or None if generation failed.
"""
# Resolve input image strictly in-memory
img = input_image
if img is None:
try:
from weather_data_visualisation import weather_data_visualisation
img = weather_data_visualisation(save_to_disk=False)
except Exception:
img = None
if img is None:
return None
# Prepare prompt
ptxt = prompt or DEFAULT_PROMPT
output_image = None
last_error = None
# Retry up to 5 times, waiting 2 seconds between failed attempts
for attempt in range(1, 6):
try:
response = client.models.generate_content(
model=model,
contents=[ptxt, img],
)
except Exception as e:
last_error = e
# If not last attempt, wait and retry
if attempt < 5:
time.sleep(2)
continue
else:
print(f"GenAI request failed (attempt {attempt}/5): {e}")
break
try:
# Reset on each attempt
output_image = None
for part in response.candidates[0].content.parts:
if getattr(part, "text", None) is not None:
# Optional: print any textual response
print(part.text)
elif getattr(part, "inline_data", None) is not None:
output_image = Image.open(BytesIO(part.inline_data.data)).convert("RGB")
# Success condition
if output_image is not None:
break
except Exception as e:
last_error = e
# Parsing failed; if not last attempt, wait and retry
if attempt < 5:
time.sleep(2)
continue
else:
print(f"Failed to parse GenAI response (attempt {attempt}/5): {e}")
break
# If we reached here with no image, wait then try again (unless last attempt)
if output_image is None and attempt < 5:
time.sleep(2)
# Optional save without using as a future fallback
if output_image is not None and save_to_disk:
try:
import os
os.makedirs("output", exist_ok=True)
output_image.save("output/generated_image.png")
except Exception:
pass
if output_image is None and last_error is not None:
# Keep return type unchanged; logging already printed above
pass
return output_image
if __name__ == "__main__":
generate_genai_image() |