禁用pylint的某些模块 如 显示: Missing class docstring (missing-docstring) 则 添加 括号中的 missing-docstring 到变量中 disable=print-statement, parameter-unpacking, unpacking-in-except, old-raise-syntax, backtick, long-suffix, old-ne-operator, old-octal-literal, import-star-module-level, non-asci...
dataframe循环修改内存比如series *= -1会非常慢,用pd.concat来减少内存复制,或如下办法 # # 方法2越拼越慢 # X_ret = pd.DataFrame([]) # for corr reduction # y_ = y_.astype(np.float16) # for i in X_df: # X_ret = pd.concat([X_ret, X_df[i] * y_.values], axis=1) # pri...
功能:获取股票code的资产负债表 import tushare as tsdata=ts.get_balance_sheet('000001')print(data.head())data.to_excel('资产负债表.xls') ②利润表 函数:tushare.get_profit_statement(code) 功能:获取股票code的利润表 import tushare as tsdata=ts.get_profit_statement('000001')print(data.head())...
[1,2,3].forEach(print); 1. 2. 3. 4. ② 只用"表达式",不用"语句" “表达式”(expression)是一个单纯的运算过程,总是有返回值;“语句”(statement)是执行某种操作,没有返回值。函数式编程要求,只使用表达式,不使用语句。也就是说,每一步都是单纯的运算,而且都有返回值。 原因是函数式编程的开发动机...
print(b'hello'+'world')#TypeError: can't concat str to bytes 注意: 1)在Python 2中,print是一个语句(statement);在Python 3中变成了函数(function)。 2)无论py2,还是py3,与明文直接对应的就是unicode数据,打印unicode数据就会显示相应的明文(包括英文和中文) ...
One last thing to note is the difference between print() and console.log, print() is part of RapydScript's stdlib, and is designed to work similar to Python's print statement, console.log() is JavaScript's version of debug output, which is more powerful but also more tedious when you...
print(0 and 2 or 1) # 1 先算and and优先级高 得到0 or都为真取or前面的值 or都为假取or后面的值 or一真一假取真的 求结果:0 and 2 or 1 or 4 print(0 and 2 or 1 or 4) # 1 求结果:0 or Flase and 1 print(0 or False and 1) # Flase 总结: # x or y 如果 x为真,则值为...
returnfunc.concat(cls.name, func.lower(cls.name)) 这段代码定义了一个动态属性full_name,在查询时可以通过ORM方式直接使用,同时提供了对应的SQL表达式版本。 12. 调试与日志 开启SQLAlchemy的日志功能,对于理解查询过程非常有帮助。 logging.basicConfig() ...
Using the same MySQLConnection object from earlier, execute the SHOW DATABASES statement: Python >>> show_db_query = "SHOW DATABASES" >>> with connection.cursor() as cursor: ... cursor.execute(show_db_query) ... for db in cursor: ... print(db) ... ('information_schema',) ...
findatapy Removed additional print statement Mar 9, 2025 findatapy_examples Fixed deprecation warnings for Pandas Mar 9, 2025 tests Fixed issues with s3 read/write in IOEngine Jan 15, 2025 .gitattributes Editing language identifiers Aug 17, 2016 ...