すっきり分かる Python のログ

by kimihiro_n

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͖ͬ͢Γ෼͔Δ 1ZUIPOͷϩά @kimihiro_n

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1ZUIPOͰਖ਼͘͠ϩά͕ѻ͑ΔΑ͏ʹͳΔ ͞ΑͳΒ1SJOUσόοά ཉ͍͠ϩάΛཉ͍͠Α͏ʹʂ ඞཁͳՕॴʹߜͬͨϩάͷऔΓࠐΈ ϑΝΠϧ΍ίϯιʔϧ΁ͷग़͠෼͚ -PHHFSͷ࢓૊Έࣗମ͸ଞͷݴޠͰ΋ +BWBͱ͔+BWBͱ͔ log.debug('Hello, logging world!!') ͜ͷൃදͷ໨త

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MPHHFSͷॳظԽ ϩάΛ࢖͏ͨΊͷ͓·͡ͳ͍ -PHHFSͱݺ͹ΕΔΠϯελϯεΛ࡞Δ ϑΝΠϧ͝ͱʹ࡞੒ ͱΓ͋͑ͣ࢖ͬͯΈΔ

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ϩάͷॻ͖ࠐΈ -PHHFSΠϯελϯεͷϝιουΛݺͿ͚ͩ ॏཁ౓߹͍ʹԠͯͭ͡ͷϨϕϧ͕࢖͑Δ ϩάΛॻ͖ࠐΉ

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ඪ४Τϥʔग़ྗʹग़͖ͯ·͢ छྨͷϩά͕Ͱʜͯͳ͍ ϩάΛݟΔ This is a Warning message This is a Error message This is a Critical message

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TFU-FWFMͱ͍͏ϝιουͰมߋ σϑΥϧτ͸8"3/*/( ͜ΕҎԼͷ΋ͷ͸ແࢹ͞ΕΔ ϨϕϧΛԼ͛ͯΈΔ

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݁Ռ This is a Warning message This is a Error message This is a Critical message

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)BOEMFSͱ͍͏ͷΛॳظԽͯ͠ηοτ ͬͪ͜ʹ΋Ϩϕϧઃఆ͕͋Δ )BOEMFSͳΔ΋ͷ

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݁Ռ This is a Debug message This is a Info message This is a Warning message This is a Error message This is a Critical message

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-PHHJOHͷ͘͠Έ

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__name__ if __name__..ͷ͓·͡ͳ͍Ͱ͓ೃછΈ 1ZUIPO͔Β௚઀ݺͿͱ__main__͕ೖΔ JNQPSUͯ͠࢖ͬͨ৔߹  ɹ͜ͷϑΝΠϧͷϞδϡʔϧ໊͕ೖΔ NZBQQNPEFMTJUFNTQZͳΒ  NZBQQNPEFMTJUFNT͕ೖΔ ͓·͡ͳ͍ͷಾ

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HFU-PHHFSͷҾ਺ ࣮͸จࣈྻͳΒͳΜͰ΋͍͍ ౉ͨ͠จࣈྻ͕-PHHFSͷ໊લʹ @@OBNF@@Λຖ౓ೖΕͯΔͷ͸ ໊લܾΊΔͷ໘౗͍͔͘͞Β ศར͔ͩΒ ͓·͡ͳ͍ͷಾ

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-PHHFS͸֊૚Λ࣋ͯΔ -PHHFSͷ໊લΛ υοτ Ͱ۠੾Δͱ  উखʹ֊૚Խ͞ΕΔ NZBQQNPEFMTJUFNTͱ͍͏໊લͷ-PHHFS͸ NZBQQNPEFMT NZBQQ SPPU ͷ-PHHFSΛ਌ʹ࣋ͭ -PHHFSͷ֊૚ؔ܎

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)BOEMFSͷ໾ׂ ౉͖ͬͯͨϩάΛద੾ʹॲཧ͢Δ ෆཁͳϩάͷϑΟϧλʔ ϩάͷϑΥʔϚοτ ग़ྗઌ΁ϩάΛૹΔ ͭͷ-PHHFSʹରͯ͠ෳ਺ηοτͰ͖Δ MPHHFSBEE)BOEMFS )BOEMFSͱ͸

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4USFBN)BOEMFS ඪ४ग़ྗͳͲͷετϦʔϜʹॻ͖ࠐΉ 'JMF)BOEMFS ϑΝΠϧʹॻ͖ࠐΉ 3PUBUJOH'JMF)BOEMFS 'JMF)BOEMFSͷ3PUBUFͯ͘͠ΕΔ൛ 4.51)BOEMFS ϝʔϧΛૹΔ͍͢͝΍ͭͩΑ /VMM)BOEMFS Կ΋͠ͳ͍ ΄͔ )BOEMFSͷछྨ

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ϩάͷॻࣜΛࢦఆ͢ΔͨΊͷ΋ͷ )BOEMFSʹରͯ͠ࢦఆͰ͖Δ ࢖͑Δม਺Ұཡ IUUQTEPDTQZUIPOKQMJCSBSZ MPHHJOHIUNMMPHSFDPSEBUUSJCVUFT  formatter = logging.Formatter(  '[%(asctime)s:%(name)s:%(levelname)s] %(message)s'  ) handler.setFormatter(formatter) 'PSNBUUFS

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IUUQTEPDTQZUIPOKQIPXUPMPHHJOHIUNMVTFGVMIBOEMFST

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-PHHFSͷಈ͖ํ جຊͷಈ͖ ࣗ਎ͷ)BOEMFSΛݺͼग़͠ ˠͭ਌ͷ-PHHFS΁Ҡಈ Λ܁Γฦ͢ ʮ਌ͷ-PHHFSΛݺͼग़͔͢ʯ MPHHFSQSPQFSHBUF  ͱ͍͏ଐੑͰ੍ޚ͍ͯ͠Δ 'BMTFʹ͢Δͱଧͪ੾Γ σϑΥϧτ͸5SVF ؆ུԽͷͨΊϑΟϧλʔ౳লུ͍ͯ͠·͢

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)BOEMFSͷಈ͖ جຊͷಈ͖ ϩάͷϨϕϧΛΈͯɺ  ຬ͍ͨͯͨ͠Βॻ͖ࠐΉ͚ͩ 'PSNBUUFSͰ੔ܗͯ͠ɺ  ࣗ਎ͷॻ͖ࠐΈઌ΁ग़ྗ ؆ུԽͷͨΊϑΟϧλʔΛলུ͍ͯ͠·͢

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࣮ફฤ

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໰୊఺ ϩάઃఆͷίʔυ͕௕͍ ϩάઃఆΛॻ͘ͷ͸  ΤϯτϦϙΠϯτͳͲ͕ଟ͍ ௕͍ίʔυͰݟ௨͠ѱͨ͘͘͠ͳ͍ ղܾࡦ ผϑΝΠϧʹॻ͍ͯJNQPSUʜʜ˚ ઃఆϑΝΠϧʹͯ͠ಡΈࠐΉʜʜ˓ ͖ͬ͢Γॻ͖͍ͨ

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+40/Ͱॻ͍ͯΈΔ EJDU$POpH ઃఆ͕ೖͬͨࣙॻΛ౉͢ +40/ͷύʔε͸ࣗྗͰ ެࣜ%PDͰ͸:".- :".-ύʔαʔ͸ඇඪ४ +40/͸ϏϧτΠϯ 'JMF$POpHΛ࢖ͬͨ΍Γํ΋

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-PHHFS ϩάΛѻ͏ͨΊͷΠϯελϯε ϨϕϧʹΑΔϑΟϧλϦϯά͕Մೳ ֊૚Խ͞Ε໊ͨલΛ࣋ͭ ਌ͷ-PHHFS΁ͱ఻ൖ͢Δ )BOEMFS ϩάͷग़ྗΛ؅ཧ͢Δ -PHHFSʹର͠ରଟͰඥ෇͘ ϨϕϧʹΑΔϑΟϧλϦϯά͕Մೳ ·ͱΊ

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-PHHJOH)08501ZUIPOެࣜυΩϡϝϯτ IUUQTEPDTQZUIPOKQIPXUPMPHHJOHIUNM ϩάग़ྗͷͨΊͷQSJOUͱJNQPSUMPHHJOH͸΍Ίͯ΄͍͠2JJUB IUUQTRJJUBDPNBNFEBNBJUFNTCCGDG ϊʔτϒοΫ IUUQTHJUIVCDPNQJTUBUJVNBCPVU@QZUIPO@MPHHJOHCMPCNBTUFS BCPVU@MPHHJOHJQZOC ࠓճͷ಺༰ΛKVQZUFSOPUFCPPLܗࣜͰ·ͱΊͯ·͢ ࢀߟ