上述代码中,我们比较了两个字符串"Hello"和"hello",由于大小写不同,所以equals()函数返回False,最终输出"str1 does not equal str2"。 4.2 数字比较 num1=10num2=20ifnum1.equals(num2):print("num1 equals num2")else:print("num1 does not equal num2") 1. 2. 3. 4. 5. 6. 7. 上述代码中...
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AssertionError: One does not equal zero silly! 例: def assert(expr, args=None): if __debug__ and not expr: raise AssertionError,args 10.8 标准异常: 表10.2 列出了所有的Python当前的标准异常集,所有的异常都是内建的,所以它们在脚本启动前或在互交命令行提示符出现时已经是可用的了 表10.2 Python...
")89ifpeople>cats:10print("Not many cats! The world is saved!")1112ifpeople<dogs:13print("The world is drooled on!")1415ifpeople>dogs:16print("The world is dry!")171819dogs+=52021ifpeople>=dogs:22print("People are greater than or equal to dogs.")2324ifpeople<=dogs:25print(...
if q === sentence: print('equal') else: print('not equal') it still an error: SyntaxError: invalid syntax can u help me ? Frank•Sat, 11 Jul 2015 Hi, should be == not ===. Change to: sentence = "i love cat" q = "cat" ...
df_short = df_short.applymap(lambda x: 1 if not pd.isna(x) else np.nan) 数据库插linux只能插入nan字段,无法插入NULL或读取返回None 用python在数据库中插入NULL比如 INSERT INTO table (col1, col2) VALUES (NULL, NULL); 如果col1和col2的数据格式定义为decimal或者float: ...
last string is not empty, so bool() will return True inside if condition. Hence statement inside the if condition is executed.6. Using == OperatorThe == operator is used to test equality between two values. It returns True if the values are equal, and False if they are not. You can...
Explanation: Here, the program checks if the age is greater than or equal to 16, prints a message if the condition is true, and does not return any output if the condition is False. 2. If…Else Statement in Python The if-else statement runs one block of code if the condition is True...
self.assertEqual('foo'.upper(),'FoO')if__name__ =='__main__': unittest.main()""" Failure Expected :'FOO' Actual :'FoO' Traceback (most recent call last): File "assertion_in_python.py", line 6, in test_upper self.assertEqual('foo'.upper(), 'FoO') ...
andasassertasyncawaitbreakclasscontinuedefdelelifelseexceptFalsefinallyforfromglobalifimportinislambdaNonenonlocalnotorpassraisereturnTruetrywhilewithyield Python二级考试涉及到的保留字一共有22个。选学5个:None、finally、lambda、pass、with。 Python中的保留字也是大小写敏感的。举例:True为保留字,而true则...