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TIL
  • MAIN
  • : TIL?
  • : WIL
  • : Plan
  • : Retrospective
    • 21Y
      • Wait a moment!
      • 9M 2W
      • 9M1W
      • 8M4W
      • 8M3W
      • 8M2W
      • 8M1W
      • 7M4W
      • 7M3W
      • 7M2W
      • 7M1W
      • 6M5W
      • 1H
    • ์ƒˆ์‚ฌ๋žŒ ๋˜๊ธฐ ํ”„๋กœ์ ํŠธ
      • 2ํšŒ์ฐจ
      • 1ํšŒ์ฐจ
  • TIL : ML
    • Paper Analysis
      • BERT
      • Transformer
    • Boostcamp 2st
      • [S]Data Viz
        • (4-3) Seaborn ์‹ฌํ™”
        • (4-2) Seaborn ๊ธฐ์ดˆ
        • (4-1) Seaborn ์†Œ๊ฐœ
        • (3-4) More Tips
        • (3-3) Facet ์‚ฌ์šฉํ•˜๊ธฐ
        • (3-2) Color ์‚ฌ์šฉํ•˜๊ธฐ
        • (3-1) Text ์‚ฌ์šฉํ•˜๊ธฐ
        • (2-3) Scatter Plot ์‚ฌ์šฉํ•˜๊ธฐ
        • (2-2) Line Plot ์‚ฌ์šฉํ•˜๊ธฐ
        • (2-1) Bar Plot ์‚ฌ์šฉํ•˜๊ธฐ
        • (1-3) Python๊ณผ Matplotlib
        • (1-2) ์‹œ๊ฐํ™”์˜ ์š”์†Œ
        • (1-1) Welcome to Visualization (OT)
      • [P]MRC
        • (2๊ฐ•) Extraction-based MRC
        • (1๊ฐ•) MRC Intro & Python Basics
      • [P]KLUE
        • (5๊ฐ•) BERT ๊ธฐ๋ฐ˜ ๋‹จ์ผ ๋ฌธ์žฅ ๋ถ„๋ฅ˜ ๋ชจ๋ธ ํ•™์Šต
        • (4๊ฐ•) ํ•œ๊ตญ์–ด BERT ์–ธ์–ด ๋ชจ๋ธ ํ•™์Šต
        • [NLP] ๋ฌธ์žฅ ๋‚ด ๊ฐœ์ฒด๊ฐ„ ๊ด€๊ณ„ ์ถ”์ถœ
        • (3๊ฐ•) BERT ์–ธ์–ด๋ชจ๋ธ ์†Œ๊ฐœ
        • (2๊ฐ•) ์ž์—ฐ์–ด์˜ ์ „์ฒ˜๋ฆฌ
        • (1๊ฐ•) ์ธ๊ณต์ง€๋Šฅ๊ณผ ์ž์—ฐ์–ด ์ฒ˜๋ฆฌ
      • [U]Stage-CV
      • [U]Stage-NLP
        • 7W Retrospective
        • (10๊ฐ•) Advanced Self-supervised Pre-training Models
        • (09๊ฐ•) Self-supervised Pre-training Models
        • (08๊ฐ•) Transformer (2)
        • (07๊ฐ•) Transformer (1)
        • 6W Retrospective
        • (06๊ฐ•) Beam Search and BLEU score
        • (05๊ฐ•) Sequence to Sequence with Attention
        • (04๊ฐ•) LSTM and GRU
        • (03๊ฐ•) Recurrent Neural Network and Language Modeling
        • (02๊ฐ•) Word Embedding
        • (01๊ฐ•) Intro to NLP, Bag-of-Words
        • [ํ•„์ˆ˜ ๊ณผ์ œ 4] Preprocessing for NMT Model
        • [ํ•„์ˆ˜ ๊ณผ์ œ 3] Subword-level Language Model
        • [ํ•„์ˆ˜ ๊ณผ์ œ2] RNN-based Language Model
        • [์„ ํƒ ๊ณผ์ œ] BERT Fine-tuning with transformers
        • [ํ•„์ˆ˜ ๊ณผ์ œ] Data Preprocessing
      • Mask Wear Image Classification
        • 5W Retrospective
        • Report_Level1_6
        • Performance | Review
        • DAY 11 : HardVoting | MultiLabelClassification
        • DAY 10 : Cutmix
        • DAY 9 : Loss Function
        • DAY 8 : Baseline
        • DAY 7 : Class Imbalance | Stratification
        • DAY 6 : Error Fix
        • DAY 5 : Facenet | Save
        • DAY 4 : VIT | F1_Loss | LrScheduler
        • DAY 3 : DataSet/Lodaer | EfficientNet
        • DAY 2 : Labeling
        • DAY 1 : EDA
        • 2_EDA Analysis
      • [P]Stage-1
        • 4W Retrospective
        • (10๊ฐ•) Experiment Toolkits & Tips
        • (9๊ฐ•) Ensemble
        • (8๊ฐ•) Training & Inference 2
        • (7๊ฐ•) Training & Inference 1
        • (6๊ฐ•) Model 2
        • (5๊ฐ•) Model 1
        • (4๊ฐ•) Data Generation
        • (3๊ฐ•) Dataset
        • (2๊ฐ•) Image Classification & EDA
        • (1๊ฐ•) Competition with AI Stages!
      • [U]Stage-3
        • 3W Retrospective
        • PyTorch
          • (10๊ฐ•) PyTorch Troubleshooting
          • (09๊ฐ•) Hyperparameter Tuning
          • (08๊ฐ•) Multi-GPU ํ•™์Šต
          • (07๊ฐ•) Monitoring tools for PyTorch
          • (06๊ฐ•) ๋ชจ๋ธ ๋ถˆ๋Ÿฌ์˜ค๊ธฐ
          • (05๊ฐ•) Dataset & Dataloader
          • (04๊ฐ•) AutoGrad & Optimizer
          • (03๊ฐ•) PyTorch ํ”„๋กœ์ ํŠธ ๊ตฌ์กฐ ์ดํ•ดํ•˜๊ธฐ
          • (02๊ฐ•) PyTorch Basics
          • (01๊ฐ•) Introduction to PyTorch
      • [U]Stage-2
        • 2W Retrospective
        • DL Basic
          • (10๊ฐ•) Generative Models 2
          • (09๊ฐ•) Generative Models 1
          • (08๊ฐ•) Sequential Models - Transformer
          • (07๊ฐ•) Sequential Models - RNN
          • (06๊ฐ•) Computer Vision Applications
          • (05๊ฐ•) Modern CNN - 1x1 convolution์˜ ์ค‘์š”์„ฑ
          • (04๊ฐ•) Convolution์€ ๋ฌด์—‡์ธ๊ฐ€?
          • (03๊ฐ•) Optimization
          • (02๊ฐ•) ๋‰ด๋Ÿด ๋„คํŠธ์›Œํฌ - MLP (Multi-Layer Perceptron)
          • (01๊ฐ•) ๋”ฅ๋Ÿฌ๋‹ ๊ธฐ๋ณธ ์šฉ์–ด ์„ค๋ช… - Historical Review
        • Assignment
          • [ํ•„์ˆ˜ ๊ณผ์ œ] Multi-headed Attention Assignment
          • [ํ•„์ˆ˜ ๊ณผ์ œ] LSTM Assignment
          • [ํ•„์ˆ˜ ๊ณผ์ œ] CNN Assignment
          • [ํ•„์ˆ˜ ๊ณผ์ œ] Optimization Assignment
          • [ํ•„์ˆ˜ ๊ณผ์ œ] MLP Assignment
      • [U]Stage-1
        • 1W Retrospective
        • AI Math
          • (AI Math 10๊ฐ•) RNN ์ฒซ๊ฑธ์Œ
          • (AI Math 9๊ฐ•) CNN ์ฒซ๊ฑธ์Œ
          • (AI Math 8๊ฐ•) ๋ฒ ์ด์ฆˆ ํ†ต๊ณ„ํ•™ ๋ง›๋ณด๊ธฐ
          • (AI Math 7๊ฐ•) ํ†ต๊ณ„ํ•™ ๋ง›๋ณด๊ธฐ
          • (AI Math 6๊ฐ•) ํ™•๋ฅ ๋ก  ๋ง›๋ณด๊ธฐ
          • (AI Math 5๊ฐ•) ๋”ฅ๋Ÿฌ๋‹ ํ•™์Šต๋ฐฉ๋ฒ• ์ดํ•ดํ•˜๊ธฐ
          • (AI Math 4๊ฐ•) ๊ฒฝ์‚ฌํ•˜๊ฐ•๋ฒ• - ๋งค์šด๋ง›
          • (AI Math 3๊ฐ•) ๊ฒฝ์‚ฌํ•˜๊ฐ•๋ฒ• - ์ˆœํ•œ๋ง›
          • (AI Math 2๊ฐ•) ํ–‰๋ ฌ์ด ๋ญ์˜ˆ์š”?
          • (AI Math 1๊ฐ•) ๋ฒกํ„ฐ๊ฐ€ ๋ญ์˜ˆ์š”?
        • Python
          • (Python 7-2๊ฐ•) pandas II
          • (Python 7-1๊ฐ•) pandas I
          • (Python 6๊ฐ•) numpy
          • (Python 5-2๊ฐ•) Python data handling
          • (Python 5-1๊ฐ•) File / Exception / Log Handling
          • (Python 4-2๊ฐ•) Module and Project
          • (Python 4-1๊ฐ•) Python Object Oriented Programming
          • (Python 3-2๊ฐ•) Pythonic code
          • (Python 3-1๊ฐ•) Python Data Structure
          • (Python 2-4๊ฐ•) String and advanced function concept
          • (Python 2-3๊ฐ•) Conditionals and Loops
          • (Python 2-2๊ฐ•) Function and Console I/O
          • (Python 2-1๊ฐ•) Variables
          • (Python 1-3๊ฐ•) ํŒŒ์ด์ฌ ์ฝ”๋”ฉ ํ™˜๊ฒฝ
          • (Python 1-2๊ฐ•) ํŒŒ์ด์ฌ ๊ฐœ์š”
          • (Python 1-1๊ฐ•) Basic computer class for newbies
        • Assignment
          • [์„ ํƒ ๊ณผ์ œ 3] Maximum Likelihood Estimate
          • [์„ ํƒ ๊ณผ์ œ 2] Backpropagation
          • [์„ ํƒ ๊ณผ์ œ 1] Gradient Descent
          • [ํ•„์ˆ˜ ๊ณผ์ œ 5] Morsecode
          • [ํ•„์ˆ˜ ๊ณผ์ œ 4] Baseball
          • [ํ•„์ˆ˜ ๊ณผ์ œ 3] Text Processing 2
          • [ํ•„์ˆ˜ ๊ณผ์ œ 2] Text Processing 1
          • [ํ•„์ˆ˜ ๊ณผ์ œ 1] Basic Math
    • ๋”ฅ๋Ÿฌ๋‹ CNN ์™„๋ฒฝ ๊ฐ€์ด๋“œ - Fundamental ํŽธ
      • ์ข…ํ•ฉ ์‹ค์Šต 2 - ์บ๊ธ€ Plant Pathology(๋‚˜๋ฌด์žŽ ๋ณ‘ ์ง„๋‹จ) ๊ฒฝ์—ฐ ๋Œ€ํšŒ
      • ์ข…ํ•ฉ ์‹ค์Šต 1 - 120์ข…์˜ Dog Breed Identification ๋ชจ๋ธ ์ตœ์ ํ™”
      • ์‚ฌ์ „ ํ›ˆ๋ จ ๋ชจ๋ธ์˜ ๋ฏธ์„ธ ์กฐ์ • ํ•™์Šต๊ณผ ๋‹ค์–‘ํ•œ Learning Rate Scheduler์˜ ์ ์šฉ
      • Advanced CNN ๋ชจ๋ธ ํŒŒํ—ค์น˜๊ธฐ - ResNet ์ƒ์„ธ์™€ EfficientNet ๊ฐœ์š”
      • Advanced CNN ๋ชจ๋ธ ํŒŒํ—ค์น˜๊ธฐ - AlexNet, VGGNet, GoogLeNet
      • Albumentation์„ ์ด์šฉํ•œ Augmentation๊ธฐ๋ฒ•๊ณผ Keras Sequence ํ™œ์šฉํ•˜๊ธฐ
      • ์‚ฌ์ „ ํ›ˆ๋ จ CNN ๋ชจ๋ธ์˜ ํ™œ์šฉ๊ณผ Keras Generator ๋ฉ”์ปค๋‹ˆ์ฆ˜ ์ดํ•ด
      • ๋ฐ์ดํ„ฐ ์ฆ๊ฐ•์˜ ์ดํ•ด - Keras ImageDataGenerator ํ™œ์šฉ
      • CNN ๋ชจ๋ธ ๊ตฌํ˜„ ๋ฐ ์„ฑ๋Šฅ ํ–ฅ์ƒ ๊ธฐ๋ณธ ๊ธฐ๋ฒ• ์ ์šฉํ•˜๊ธฐ
    • AI School 1st
    • ํ˜„์—… ์‹ค๋ฌด์ž์—๊ฒŒ ๋ฐฐ์šฐ๋Š” Kaggle ๋จธ์‹ ๋Ÿฌ๋‹ ์ž…๋ฌธ
    • ํŒŒ์ด์ฌ ๋”ฅ๋Ÿฌ๋‹ ํŒŒ์ดํ† ์น˜
  • TIL : Python & Math
    • Do It! ์žฅ๊ณ +๋ถ€ํŠธ์ŠคํŠธ๋žฉ: ํŒŒ์ด์ฌ ์›น๊ฐœ๋ฐœ์˜ ์ •์„
      • Relations - ๋‹ค๋Œ€๋‹ค ๊ด€๊ณ„
      • Relations - ๋‹ค๋Œ€์ผ ๊ด€๊ณ„
      • ํ…œํ”Œ๋ฆฟ ํŒŒ์ผ ๋ชจ๋“ˆํ™” ํ•˜๊ธฐ
      • TDD (Test Driven Development)
      • template tags & ์กฐ๊ฑด๋ฌธ
      • ์ •์  ํŒŒ์ผ(static files) & ๋ฏธ๋””์–ด ํŒŒ์ผ(media files)
      • FBV (Function Based View)์™€ CBV (Class Based View)
      • Django ์ž…๋ฌธํ•˜๊ธฐ
      • ๋ถ€ํŠธ์ŠคํŠธ๋žฉ
      • ํ”„๋ก ํŠธ์—”๋“œ ๊ธฐ์ดˆ๋‹ค์ง€๊ธฐ (HTML, CSS, JS)
      • ๋“ค์–ด๊ฐ€๊ธฐ + ํ™˜๊ฒฝ์„ค์ •
    • Algorithm
      • Programmers
        • Level1
          • ์†Œ์ˆ˜ ๋งŒ๋“ค๊ธฐ
          • ์ˆซ์ž ๋ฌธ์ž์—ด๊ณผ ์˜๋‹จ์–ด
          • ์ž์—ฐ์ˆ˜ ๋’ค์ง‘์–ด ๋ฐฐ์—ด๋กœ ๋งŒ๋“ค๊ธฐ
          • ์ •์ˆ˜ ๋‚ด๋ฆผ์ฐจ์ˆœ์œผ๋กœ ๋ฐฐ์น˜ํ•˜๊ธฐ
          • ์ •์ˆ˜ ์ œ๊ณฑ๊ทผ ํŒ๋ณ„
          • ์ œ์ผ ์ž‘์€ ์ˆ˜ ์ œ๊ฑฐํ•˜๊ธฐ
          • ์ง์‚ฌ๊ฐํ˜• ๋ณ„์ฐ๊ธฐ
          • ์ง์ˆ˜์™€ ํ™€์ˆ˜
          • ์ฒด์œก๋ณต
          • ์ตœ๋Œ€๊ณต์•ฝ์ˆ˜์™€ ์ตœ์†Œ๊ณต๋ฐฐ์ˆ˜
          • ์ฝœ๋ผ์ธ  ์ถ”์ธก
          • ํฌ๋ ˆ์ธ ์ธํ˜•๋ฝ‘๊ธฐ ๊ฒŒ์ž„
          • ํ‚คํŒจ๋“œ ๋ˆ„๋ฅด๊ธฐ
          • ํ‰๊ท  ๊ตฌํ•˜๊ธฐ
          • ํฐ์ผ“๋ชฌ
          • ํ•˜์ƒค๋“œ ์ˆ˜
          • ํ•ธ๋“œํฐ ๋ฒˆํ˜ธ ๊ฐ€๋ฆฌ๊ธฐ
          • ํ–‰๋ ฌ์˜ ๋ง์…ˆ
        • Level2
          • ์ˆซ์ž์˜ ํ‘œํ˜„
          • ์ˆœ์œ„ ๊ฒ€์ƒ‰
          • ์ˆ˜์‹ ์ตœ๋Œ€ํ™”
          • ์†Œ์ˆ˜ ์ฐพ๊ธฐ
          • ์†Œ์ˆ˜ ๋งŒ๋“ค๊ธฐ
          • ์‚ผ๊ฐ ๋‹ฌํŒฝ์ด
          • ๋ฌธ์ž์—ด ์••์ถ•
          • ๋ฉ”๋‰ด ๋ฆฌ๋‰ด์–ผ
          • ๋” ๋งต๊ฒŒ
          • ๋•…๋”ฐ๋จน๊ธฐ
          • ๋ฉ€์ฉกํ•œ ์‚ฌ๊ฐํ˜•
          • ๊ด„ํ˜ธ ํšŒ์ „ํ•˜๊ธฐ
          • ๊ด„ํ˜ธ ๋ณ€ํ™˜
          • ๊ตฌ๋ช…๋ณดํŠธ
          • ๊ธฐ๋Šฅ ๊ฐœ๋ฐœ
          • ๋‰ด์Šค ํด๋Ÿฌ์Šคํ„ฐ๋ง
          • ๋‹ค๋ฆฌ๋ฅผ ์ง€๋‚˜๋Š” ํŠธ๋Ÿญ
          • ๋‹ค์Œ ํฐ ์ˆซ์ž
          • ๊ฒŒ์ž„ ๋งต ์ตœ๋‹จ๊ฑฐ๋ฆฌ
          • ๊ฑฐ๋ฆฌ๋‘๊ธฐ ํ™•์ธํ•˜๊ธฐ
          • ๊ฐ€์žฅ ํฐ ์ •์‚ฌ๊ฐํ˜• ์ฐพ๊ธฐ
          • H-Index
          • JadenCase ๋ฌธ์ž์—ด ๋งŒ๋“ค๊ธฐ
          • N๊ฐœ์˜ ์ตœ์†Œ๊ณต๋ฐฐ์ˆ˜
          • N์ง„์ˆ˜ ๊ฒŒ์ž„
          • ๊ฐ€์žฅ ํฐ ์ˆ˜
          • 124 ๋‚˜๋ผ์˜ ์ˆซ์ž
          • 2๊ฐœ ์ดํ•˜๋กœ ๋‹ค๋ฅธ ๋น„ํŠธ
          • [3์ฐจ] ํŒŒ์ผ๋ช… ์ •๋ ฌ
          • [3์ฐจ] ์••์ถ•
          • ์ค„ ์„œ๋Š” ๋ฐฉ๋ฒ•
          • [3์ฐจ] ๋ฐฉ๊ธˆ ๊ทธ๊ณก
          • ๊ฑฐ๋ฆฌ๋‘๊ธฐ ํ™•์ธํ•˜๊ธฐ
        • Level3
          • ๋งค์นญ ์ ์ˆ˜
          • ์™ธ๋ฒฝ ์ ๊ฒ€
          • ๊ธฐ์ง€๊ตญ ์„ค์น˜
          • ์ˆซ์ž ๊ฒŒ์ž„
          • 110 ์˜ฎ๊ธฐ๊ธฐ
          • ๊ด‘๊ณ  ์ œ๊ฑฐ
          • ๊ธธ ์ฐพ๊ธฐ ๊ฒŒ์ž„
          • ์…”ํ‹€๋ฒ„์Šค
          • ๋‹จ์†์นด๋ฉ”๋ผ
          • ํ‘œ ํŽธ์ง‘
          • N-Queen
          • ์ง•๊ฒ€๋‹ค๋ฆฌ ๊ฑด๋„ˆ๊ธฐ
          • ์ตœ๊ณ ์˜ ์ง‘ํ•ฉ
          • ํ•ฉ์Šน ํƒ์‹œ ์š”๊ธˆ
          • ๊ฑฐ์Šค๋ฆ„๋ˆ
          • ํ•˜๋…ธ์ด์˜ ํƒ‘
          • ๋ฉ€๋ฆฌ ๋›ฐ๊ธฐ
          • ๋ชจ๋‘ 0์œผ๋กœ ๋งŒ๋“ค๊ธฐ
        • Level4
    • Head First Python
    • ๋ฐ์ดํ„ฐ ๋ถ„์„์„ ์œ„ํ•œ SQL
    • ๋‹จ ๋‘ ์žฅ์˜ ๋ฌธ์„œ๋กœ ๋ฐ์ดํ„ฐ ๋ถ„์„๊ณผ ์‹œ๊ฐํ™” ๋ฝ€๊ฐœ๊ธฐ
    • Linear Algebra(Khan Academy)
    • ์ธ๊ณต์ง€๋Šฅ์„ ์œ„ํ•œ ์„ ํ˜•๋Œ€์ˆ˜
    • Statistics110
  • TIL : etc
    • [๋”ฐ๋ฐฐ๋Ÿฐ] Kubernetes
    • [๋”ฐ๋ฐฐ๋Ÿฐ] Docker
      • 2. ๋„์ปค ์„ค์น˜ ์‹ค์Šต 1 - ํ•™์ŠตํŽธ(์ค€๋น„๋ฌผ/์‹ค์Šต ์œ ํ˜• ์†Œ๊ฐœ)
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  • Exception
  • Exception Handling
  • File Handling
  • Directory ๋‹ค๋ฃจ๊ธฐ
  • Pickle
  • Loggin Handling
  • ํ”„๋กœ๊ทธ๋žจ ์„ค์ •

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  1. TIL : ML
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  4. Python

(Python 5-1๊ฐ•) File / Exception / Log Handling

210804

Exception

์˜ˆ์™ธ์—๋Š” ์˜ˆ์ƒ์ด ๊ฐ€๋Šฅํ•˜๊ฑฐ๋‚˜ ๋ถˆ๊ฐ€๋Šฅํ•˜๋‹ค.

์˜ˆ์ƒ ๊ฐ€๋Šฅํ•œ ์˜ˆ์™ธ

  • ๋ฐœ์ƒ ์—ฌ๋ถ€๋ฅผ ์‚ฌ์ „์— ์ธ์ง€ํ•  ์ˆ˜ ์žˆ๋Š” ์˜ˆ์™ธ

  • ์‚ฌ์šฉ์ž์˜ ์ž˜๋ชป๋œ ์ž…๋ ฅ, ํŒŒ์ผ ํ˜ธ์ถœ ์‹œ ํŒŒ์ผ ์—†์Œ

  • ๊ฐœ๋ฐœ์ž๊ฐ€ ๋ฐ˜๋“œ์‹œ ๋ช…์‹œ์ ์œผ๋กœ ์ •์˜ ํ•ด์•ผํ•จ

์˜ˆ์ƒ ๋ถˆ๊ฐ€๋Šฅํ•œ ์˜ˆ์™ธ

  • ์ธํ„ฐํ”„๋ฆฌํ„ฐ ๊ณผ์ •์—์„œ ๋ฐœ์ƒํ•˜๋Š” ์˜ˆ์™ธ, ๊ฐœ๋ฐœ์ž ์‹ค์ˆ˜

  • ๋ฆฌ์ŠคํŠธ์˜ ๋ฒ”์œ„๋ฅผ ๋„˜์–ด๊ฐ€๋Š” ๊ฐ’ ํ˜ธ์ถœ, ์ •์ˆ˜ 0์œผ๋กœ ๋‚˜๋ˆ”

  • ์ˆ˜ํ–‰ ๋ถˆ๊ฐ€์‹œ ์ธํ„ฐํ”„๋ฆฌํ„ฐ๊ฐ€ ์ž๋™ ํ˜ธ์ถœใ…‡

์˜ˆ์ƒ์ด ๊ฐ€๋Šฅํ•˜๋ฉด if๋ฌธ์œผ๋กœ ์กฐ๊ฑด์„ ๋‹ฌ์•„์ฃผ๋ฉด ๋œ๋‹ค. ์˜ˆ์ƒ์ด ๋ถˆ๊ฐ€๋Šฅ ํ•˜๋‹ค๋ฉด? => Exception Handling

Exception Handling

try - except ๋ฌธ๋ฒ•

try:
    ์˜ˆ์™ธ ๋ฐœ์ƒ ๊ฐ€๋Šฅ ์ฝ”๋“œ
except <Exception Type>:
    ์˜ˆ์™ธ ๋ฐœ์ƒ์‹œ ๋Œ€์‘ํ•˜๋Š” ์ฝ”๋“œ

try-except-finally ๋ฌธ๋ฒ•

try:
    ์˜ˆ์™ธ ๋ฐœ์ƒ ๊ฐ€๋Šฅ ์ฝ”๋“œ
except <Exception Type>:
    ์˜ˆ์™ธ ๋ฐœ์ƒ์‹œ ๋™์ž‘ํ•˜๋Š” ์ฝ”๋“œ
finally:
    ์˜ˆ์™ธ ๋ฐœ์ƒ ์—ฌ๋ถ€์™€ ์ƒ๊ด€์—†์ด ์‹คํ–‰๋จ

Exception์˜ ์ข…๋ฅ˜

  • Built-in Exception: ๊ธฐ๋ณธ์ ์œผ๋กœ ์ œ๊ณตํ•˜๋Š” ์˜ˆ์™ธ

    • IndexError : List์˜ Index ๋ฒ”์œ„ ์ดˆ๊ณผ

    • NameError : ์กด์žฌํ•˜์ง€ ์•Š๋Š” ๋ณ€์ˆ˜ ํ˜ธ์ถœ

    • ZeroDivisionError : 0์œผ๋กœ ์ˆซ์ž๋ฅผ ๋‚˜๋ˆŒ ๋•Œ

    • Value Error : ๋ณ€ํ™˜ํ•  ์ˆ˜ ์—†๋Š” ๋ฌธ์ž/์ˆซ์ž ๋ณ€ํ™˜ํ•  ๋•Œ

    • FileNotFoundError : ์กด์žฌํ•˜์ง€ ์•Š๋Š” ํŒŒ์ผ์„ ํ˜ธ์ถœํ•  ๋•Œ

    • ๊ทธ ์™ธ์—๋„ ์ œ๊ณต๋˜๋Š” ์˜ˆ์™ธ๊ฐ€ ๊ต‰์žฅํžˆ ๋งŽ๋‹ค

์˜ˆ์™ธ ์ •๋ณด ํ‘œ์‹œํ•˜๊ธฐ

for i in range(10):
    try:
        print(10 / i)
    except ZeroDivisionError as e:
        print(e)
        print("Not divided by 0")

raise ๊ตฌ๋ฌธ

  • ํ•„์š”์— ๋”ฐ๋ผ ๊ฐ•์ œ๋กœ Exception์„ ๋ฐœ์ƒ์‹œํ‚จ๋‹ค.

raise <Exception Type>(์˜ˆ์™ธ์ •๋ณด)
while True:
    value = input("๋ณ€ํ™˜ํ•  ์ •์ˆ˜ ๊ฐ’์„ ์ž…๋ ฅํ•ด์ฃผ์„ธ์š”")
    for digit in value:
        if digit not in "0123456789":
            raise ValueError("์ˆซ์ž๊ฐ’์„ ์ž…๋ ฅํ•˜์ง€\
            ์•Š์œผ์…จ์Šต๋‹ˆ๋‹ค")
        print("์ •์ˆ˜๊ฐ’์œผ๋กœ ๋ณ€ํ™˜๋œ ์ˆซ์ž -", int(value))

assert ๊ตฌ๋ฌธ

  • ํŠน์ • ์กฐ๊ฑด์— ๋งŒ์กฑํ•˜์ง€ ์•Š์„ ๊ฒฝ์šฐ ์˜ˆ์™ธ ๋ฐœ์ƒ

assert ์˜ˆ์™ธ์กฐ๊ฑด
def get_binary_nmubmer(decimal_number):
    assert isinstance(decimal_number, int)
    return bin(decimal_number)
    
print(get_binary_nmubmer(10))

File Handling

ํŒŒ์ผ์˜ ์ข…๋ฅ˜

  • ๊ธฐ๋ณธ์ ์ธ ํŒŒ์ผ ์ข…๋ฅ˜๋กœ๋Š” text ํŒŒ์ผ๊ณผ binary ํŒŒ์ผ๋กœ ๋‚˜๋‰œ๋‹ค.

  • ๋ชจ๋“  ํ…์ŠคํŠธ ํŒŒ์ผ๋„ ์‹ค์ œ๋กœ๋Š” ๋ฐ”์ด๋„ˆ๋ฆฌ ํŒŒ์ผ์ด๋‹ค.

    • ์ปดํ“จํ„ฐ๋Š” ํ…์ŠคํŠธ ํŒŒ์ผ์„ ์ฒ˜๋ฆฌํ•˜๊ธฐ ์œ„ํ•ด ๋ฐ”์ด๋„ˆ๋ฆฌ ํŒŒ์ผ๋กœ ๋ณ€ํ™˜์‹œํ‚จ๋‹ค.

  • text ํŒŒ์ผ

    • ์ธ๊ฐ„๋„ ์ดํ•ดํ•  ์ˆ˜ ์žˆ๋Š” ํ˜•ํƒœ์ธ ๋ฌธ์ž์—ด ํ˜•์‹์œผ๋กœ ์ €์žฅ๋œ ํŒŒ์ผ

    • ๋ฉ”๋ชจ์žฅ์œผ๋กœ ์—ด๋ฉด ๋‚ด์šฉ ํ™•์ธ ๊ฐ€๋Šฅ

    • ๋ฉ”๋ชจ์žฅ์— ์ €์žฅ๋œ ํŒŒ์ผ, HTML ํŒŒ์ผ, ํŒŒ์ด์ฌ ์ฝ”๋“œ ํŒŒ์ผ ๋“ฑ

  • binary ํŒŒ์ผ

    • ์ปดํ“จํ„ฐ๋งŒ ์ดํ•ดํ•  ์ˆ˜ ์žˆ๋Š” ํ˜•ํƒœ์ธ

      ์ด์ง„(๋ฒ•)ํ˜•์‹์œผ๋กœ ์ €์žฅ๋œ ํŒŒ์ผ

    • ์ผ๋ฐ˜์ ์œผ๋กœ ๋ฉ”๋ชจ์žฅ์œผ๋กœ ์—ด๋ฉด

      ๋‚ด์šฉ์ด ๊นจ์ ธ ๋ณด์ž„ (๋ฉ”๋ชจ์žฅ ํ•ด์„ค ๋ถˆ๊ฐ€)

    • ์—‘์…€ํŒŒ์ผ, ์›Œ๋“œ ํŒŒ์ผ ๋“ฑ๋“ฑ

Python File I/O

f = open("<ํŒŒ์ผ์ด๋ฆ„>", "์ ‘๊ทผ ๋ชจ๋“œ")
f.close()

# ์ ‘๊ทผ ๋ชจ๋“œ
r : ์ฝ๊ธฐ๋ชจ๋“œ
w : ์“ฐ๊ธฐ๋ชจ๋“œ
a : ์ถ”๊ฐ€๋ชจ๋“œ
  • w, ์“ฐ๊ธฐ๋ชจ๋“œ์˜ ๊ฒฝ์šฐ encoding ๋ฐฉ์‹์„ utf8๊ณผ cp949 ๋“ฑ์˜ ๋ฐฉ๋ฒ•์œผ๋กœ ์ •ํ•  ์ˆ˜ ์žˆ๋‹ค. ํ˜‘์—…ํ•  ๋•Œ๋Š” ์ด๋ฅผ ํ†ต์ผํ•˜๋Š”๊ฒŒ ์ข‹๋‹ค.

  • ๋˜, w๋Š” ๊ธฐ์กด ํŒŒ์ผ์„ ๋ฎ์–ด์“ฐ๊ธฐ ๋–„๋ฌธ์— ์ฃผ์˜๊ฐ€ ํ•„์š”ํ•˜๋‹ค.

  • a, ์ถ”๊ฐ€๋ชจ๋“œ๋Š” ๊ธฐ์กด ํŒŒ์ผ์˜ ๋งˆ์ง€๋ง‰๋ถ€ํ„ฐ ์ด์–ด์„œ ๋ถ™์ด๊ฒŒ ๋œ๋‹ค.

Directory ๋‹ค๋ฃจ๊ธฐ

๋””๋ ‰ํ† ๋ฆฌ ์ƒ์„ฑ

import os
os.mkdir("log")

๋””๋ ‰ํ† ๋ฆฌ ์กด์žฌ ์—ฌ๋ถ€ ํ™•์ธ

if not os.path.isdir("log"):
    os.mkdir("log")

๊ฒฝ๋กœ ์—ฐ๊ฒฐํ•˜๊ธฐ

folder = os.getcwd()
file = 'abc.txt'
os.path.join(folder, file)
  • ์ด ๋•Œ ๋ฌธ์ž์—ด๋กœ ์—ฐ๊ฒฐํ•  ์ˆ˜๋„ ์žˆ๋Š”๋ฐ, ๋งฅ๊ณผ ์œˆ๋„์šฐ๊ฐ€ ๋””๋ ‰ํ† ๋ฆฌ๋ฅผ ๊ตฌ๋ถ„ํ•˜๋Š” ๊ธฐํ˜ธ๊ฐ€ ๋‹ค๋ฅด๊ธฐ ๋•Œ๋ฌธ์— join ์„ ๊ถŒ์žฅํ•œ๋‹ค.

pathlib ๋ชจ๋“ˆ์„ ์‚ฌ์šฉํ•ด์„œ path๋ฅผ ๊ฐ์ฒด๋กœ ๋‹ค๋ฃจ๊ธฐ

>>> import pathlib
>>>
>>> cwd = pathlib.Path.cwd()
>>> cwd
WindowsPath('D:/workspace')
>>> cwd.parent
WindowsPath('D:/')
>>> list(cwd.parents)
[WindowsPath('D:/')]
>>> list(cwd.glob("*"))
[WindowsPath('D:/workspace/ai-pnpp'),
WindowsPath('D:/workspace/cs50_auto_grader'),
WindowsPath('D:/workspace/data-academy'),
WindowsPath('D:/workspace/DSME-AI-SmartYard'),
WindowsPath('D:/workspace/introduction_to_python_TEAMLAB_MOOC'), 

ํŒŒ์ผ์ด ์กด์žฌํ•˜๋Š”์ง€ ํ™•์ธ

if not os.path.exists("log/count_log.txt"):
    f = open("log/count_log.txt", 'w', encoding="utf8")

Pickle

ํŒŒ์ด์ฌ์˜ ๊ฐ์ฒด๋ฅผ ์˜์†ํ™” ํ•˜๋Š” built-in ๊ฐ์ฒด. ๋ฐ์ดํ„ฐ๋‚˜ object๋“ฑ ์‹คํ–‰์ค‘ ์ •๋ณด๋ฅผ ์ €์žฅํ•˜๊ณ  ๋ถˆ๋Ÿฌ์™€์„œ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋‹ค. python ์ „์šฉ binary ํŒŒ์ผ์ด๋ผ๊ณ  ์ดํ•ดํ•  ์ˆ˜ ์žˆ๋‹ค.

  • ์˜์†ํ™”๋Š” ํŒŒ์ด์ฌ์—์„œ ์‚ฌ์šฉํ•˜๋Š” ๊ฐ์ฒด๋ฅผ ํŒŒ์ผ๋กœ ์ €์žฅํ•ด์„œ ์“ฐ๋Š” ๊ฒƒ์„ ์˜๋ฏธํ•œ๋‹ค.

ํ”ผํด ํŒŒ์ผ ์ž‘์„ฑํ•˜๊ธฐ

import pickle
f = open("list.pickle", "wb")
test = [1, 2, 3, 4, 5]
pickle.dump(test, f)
f.close()
  • binary ํŒŒ์ผ์ด๋ฏ€๋กœ 'w' ๋Œ€์‹  'wb'๋ฅผ ๋ถ™์—ฌ์คฌ๋‹ค.

ํ”ผํด ๋ถˆ๋Ÿฌ์˜ค๊ธฐ

f = open("list.pickle", "rb")
test_pickle = pickle.load(f)
print(test_pickle)
f.close()

Loggin Handling

  • ํ”„๋กœ๊ทธ๋žจ์ด ์‹คํ–‰๋˜๋Š” ๋™์•ˆ ์ผ์–ด๋‚˜๋Š” ์ •๋ณด๋ฅผ ๊ธฐ๋ก์„ ๋‚จ๊ธฐ๊ธฐ

  • ์œ ์ €์˜ ์ ‘๊ทผ, ํ”„๋กœ๊ทธ๋žจ์˜ Exception, ํŠน์ • ํ•จ์ˆ˜์˜ ์‚ฌ์šฉ

  • Console ํ™”๋ฉด์— ์ถœ๋ ฅ, ํŒŒ์ผ์— ๋‚จ๊ธฐ๊ธฐ, DB์— ๋‚จ๊ธฐ๊ธฐ ๋“ฑ๋“ฑ

  • ๊ธฐ๋ก๋œ ๋กœ๊ทธ๋ฅผ ๋ถ„์„ํ•˜์—ฌ ์˜๋ฏธ์žˆ๋Š” ๊ฒฐ๊ณผ๋ฅผ ๋„์ถœ ํ•  ์ˆ˜ ์žˆ์Œ

  • ์‹คํ–‰์‹œ์ ์—์„œ ๋‚จ๊ฒจ์•ผ ํ•˜๋Š” ๊ธฐ๋ก, ๊ฐœ๋ฐœ์‹œ์ ์—์„œ ๋‚จ๊ฒจ์•ผํ•˜๋Š” ๊ธฐ๋ก

logging ๋ชจ๋“ˆ

import logging

logging.debug("ํ‹€๋ ธ์ž–์•„!")
logging.info("ํ™•์ธํ•ด")
logging.warning("์กฐ์‹ฌํ•ด!")
logging.error("์—๋Ÿฌ๋‚ฌ์–ด!!!")
logging.critical ("๋งํ–ˆ๋‹ค...")

logging level

  • debug : ๊ฐœ๋ฐœ์‹œ ์ฒ˜๋ฆฌ ๊ธฐ๋ก์„ ๋‚จ๊ฒจ์•ผํ•˜๋Š” ๋กœ๊ทธ ์ •๋ณด๋ฅผ ๋‚จ๊น€

  • info : ์ฒ˜๋ฆฌ๊ฐ€ ์ง„ํ–‰๋˜๋Š” ๋™์•ˆ์˜ ์ •๋ณด๋ฅผ ์•Œ๋ฆผ

  • warning : ์‚ฌ์šฉ์ž๊ฐ€ ์ž˜๋ชป ์ž…๋ ฅํ•œ ์ •๋ณด๋‚˜ ์ฒ˜๋ฆฌ๋Š” ๊ฐ€๋Šฅํ•˜๋‚˜ ์›๋ž˜ ๊ฐœ๋ฐœ์‹œ ์˜๋„์น˜ ์•Š๋Š” ์ •๋ณด๊ฐ€ ๋“ค์–ด์™”์„ ๋•Œ ์•Œ๋ฆผ

  • error : ์ž˜๋ชป๋œ ์ฒ˜๋ฆฌ๋กœ ์ธํ•ด ์—๋Ÿฌ๊ฐ€ ๋‚ฌ์œผ๋‚˜, ํ”„๋กœ๊ทธ๋žจ์€ ๋™์ž‘ํ•  ์ˆ˜ ์žˆ์Œ์„ ์•Œ๋ฆผ.

  • critical : ์ž˜๋ชป๋œ ์ฒ˜๋ฆฌ๋กœ ๋ฐ์ดํ„ฐ ์†์‹ค์ด๋‚˜ ๋” ์ด์ƒ ํ”„๋กœ๊ทธ๋žจ์ด ๋™์ž‘ํ•  ์ˆ˜ ์—†์Œ์„ ์•Œ๋ฆผ

import logging
# Logger ์„ ์–ธ
logger = logging.getLogger("main")
# Logger์˜ output ๋ฐฉ๋ฒ• ์„ ์–ธ
stream_hander = logging.StreamHandler()
# Logger์˜ output ๋“ฑ๋ก
logger.addHandler(stream_hander)

logger.setLevel(logging.DEBUG)
logger.debug("ํ‹€๋ ธ์ž–์•„!")
logger.info("ํ™•์ธํ•ด")
logger.warning("์กฐ์‹ฌํ•ด!")
logger.error("์—๋Ÿฌ๋‚ฌ์–ด!!!")
logger.critical("๋งํ–ˆ๋‹ค...")

logger.setLevel(logging.CRITICAL)
logger.debug("ํ‹€๋ ธ์ž–์•„!")
logger.info("ํ™•์ธํ•ด")
logger.warning("์กฐ์‹ฌํ•ด!")
logger.error("์—๋Ÿฌ๋‚ฌ์–ด!!!")
logger.critical("๋งํ–ˆ๋‹ค...")

Logging formmater

  • Log์˜ ๊ฒฐ๊ณผ๊ฐ’์˜ ํฌ๋งท์„ ์ง€์ •ํ•ด ์ค„ ์ˆ˜ ์žˆ์Œ

formatter = logging.Formatter('%(asctime)s %(levelname)s %(process)d %(message)s')

2018-01-18 22:47:04,385 ERROR 4410 ERROR occurred
2018-01-18 22:47:22,458 ERROR 4439 ERROR occurred
2018-01-18 22:47:22,458 INFO 4439 HERE WE ARE
2018-01-18 22:47:24,680 ERROR 4443 ERROR occurred
2018-01-18 22:47:24,681 INFO 4443 HERE WE ARE
2018-01-18 22:47:24,970 ERROR 4445 ERROR occurred
2018-01-18 22:47:24,970 INFO 4445 HERE WE ARE

ํ”„๋กœ๊ทธ๋žจ ์„ค์ •

๋ฌด์—‡์„?

  • ๋ฐ์ดํ„ฐ ํŒŒ์ผ ์œ„์น˜, ํŒŒ์ผ ์ €์žฅ ์žฅ์†Œ, Operation Type ๋“ฑ

์–ด๋–ป๊ฒŒ?

  • configparser : ํŒŒ์ผ์—

  • argparser : ์‹คํ–‰ ์‹œ์ ์—

configparser

  • ํ”„๋กœ๊ทธ๋žจ์˜ ์‹คํ–‰ ์„ค์ •์„ file์— ์ €์žฅํ•จ

  • Section, Key, Value ๊ฐ’์˜ ํ˜•ํƒœ๋กœ ์„ค์ •๋œ ์„ค์ • ํŒŒ์ผ์„ ์‚ฌ์šฉ

  • ์„ค์ •ํŒŒ์ผ์„ Dict Type์œผ๋กœ ํ˜ธ์ถœํ›„ ์‚ฌ์šฉ

import configparser
config = configparser.ConfigParser()

config.sections()
config.read('example.cfg')
config.sections()

for key in config['SectionOne']:
    print(key)

argparser

  • Console ์ฐฝ์—์„œ ํ”„๋กœ๊ทธ๋žจ ์‹คํ–‰์‹œ Setting ์ •๋ณด๋ฅผ ์ €์žฅํ•จ

  • ๊ฑฐ์˜ ๋ชจ๋“  Console ๊ธฐ๋ฐ˜ Python ํ”„๋กœ๊ทธ๋žจ ๊ธฐ๋ณธ์œผ๋กœ ์ œ๊ณต

  • ํŠน์ˆ˜ ๋ชจ๋“ˆ๋„ ๋งŽ์ด ์กด์žฌํ•˜์ง€๋งŒ(TF), ์ผ๋ฐ˜์ ์œผ๋กœ argparse๋ฅผ ์‚ฌ์šฉ

  • Command-Line Option ์ด๋ผ๊ณ  ๋ถ€๋ฆ„

import argparse

parser = argparse.ArgumentParser(description='Sum two integers.')
# ์งง์€ ์ด๋ฆ„, ๊ธด ์ด๋ฆ„, ํ‘œ์‹œ๋ช…, Help ์„ค๋ช…, Argument Type
parser.add_argument('-a', "--a_value", dest=โ€A_value", help="A integers", type=int)
parser.add_argument('-b', "--b_value", dest=โ€B_value", help="B integers", type=int)

args = parser.parse_args()
print(args)
print(args.a)
print(args.b)
print(args.a + args.b)

>>> python arg_sum.py -a 10 -b 10
Namespace(a=10, b=10)
10
10
20

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