Python插入數據庫提交失敗，一直走IntegrityError錯誤，沒打印錯誤信息(一定注意編碼規范，記住打印錯誤信息)，以為插不進去，弄了好久，最后打印了錯誤信息
(sqlite3.IntegrityError) samples.file_type may not be NULL [SQL: u'INSERT INTO samples (file_size, file_type, md5, crc32, sha1, sha256, sha512, ssdeep) VALUES (?, ?, ?, ?, ?, ?, ?, ?)'] [parameters: (53, None, 'hello', 'crc32', 'sha1', 'sha256', 'sha512', None)]
提示為file_type不能為空，但是我建表的時候file_type設置的是不允許為空，而插入的時候file_type傳入為NULL，所以Insert不成功，報錯IntegrityError
from sqlalchemy import Column, Integer, String
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Text, Index
from sqlalchemy.exc import SQLAlchemyError, IntegrityError
from sqlalchemy.orm import sessionmaker
Base = declarative_base()
class Sample(Base):
"""Submitted files details."""
__tablename__ = "samples"
id = Column(Integer(), primary_key=True)
file_size = Column(Integer(), nullable=False)
file_type = Column(Text(), nullable=False)
md5 = Column(String(32), nullable=False)
crc32 = Column(String(8), nullable=False)
sha1 = Column(String(40), nullable=False)
sha256 = Column(String(64), nullable=False)
sha512 = Column(String(128), nullable=False)
ssdeep = Column(String(255), nullable=True)
__table_args__ = Index("hash_index", "md5", "crc32", "sha1",
"sha256", "sha512", unique=True),
def __repr__(self):
return "<Sample('{0}','{1}')>".format(self.id, self.sha256)
def __init__(self, md5, crc32, sha1, sha256, sha512,
file_size, file_type=None, ssdeep=None):
self.md5 = md5
self.sha1 = sha1
self.crc32 = crc32
self.sha256 = sha256
self.sha512 = sha512
self.file_size = file_size
if file_type:
self.file_type = file_type
if ssdeep:
self.ssdeep = ssdeep
engine = create_engine("sqlite:///cuckoo.db",echo=True) #返回連接引擎
metadata = Base.metadata
metadata.create_all(engine) #連接或者創建
#sample_mike = Sample("hello", "crc32", "sha1", "sha256", "sha512", 53, None, None) #非空數據不能傳空
sample_mike = Sample("hello", "crc32", "sha1", "sha256", "sha512", 53, "aa", None)
Session = sessionmaker(bind=engine) session = Session() session.add(sample_mike) #數據庫會話
try:
session.commit() #提交
except IntegrityError as e:
print e
except SQLAlchemyError as e:
print e
最后在網上看到一個比較有用的工具sqlite,查看db數據庫
sqlite、db、insert.py下載 http://files.cnblogs.com/files/aliflycoris/db.zip