x=5y=10ifx!=y:print("x is not equal to y")else:print("x is equal to y")# 输出 x is...
String form:[1,2,3]Length:3Docstring:Built-inmutable sequence.If no argument is given,the constructor creates anewemptylist.The argument must be an iterableifspecified.In[3]:print?Docstring:print(value,...,sep=' ',end='\n',file=sys.stdout,flush=False)Prints the values to a stream,or ...
s="Hello"ifs!="0":print("The string is not equal to zero.")else:print("The string is equal to zero.") 1. 2. 3. 4. 5. 在上面的代码中,我们定义了一个字符串s,然后使用!=运算符判断它是否不等于0。如果不等于0,就输出The string is not equal to zero.,否则输出The string is equal t...
price in products: # A if price not in unique_price_list: #B unique_price_list.append(price) return len(unique_price_list) products = [ (143121312, 100), (432314553, 30), (32421912367, 150), (937153201, 30) ] print('number of unique price is: {}'.format(find_unique_price...
3.3 ifequal/ifnotequal标签 于判断两个值相等或不等的。 {% ifequalvarvar%} {% endifequal %} {% ifnotequalvarvar%} {% endifnotequal %} 3.4 注释 单行注释 {# 注释的内容 #} 多行注释 {% comment %} ... {% endcomment %}
if__name__ =='__main__': parser = argparse.ArgumentParser( description=__description__, epilog="Developed by {} on {}".format(", ".join(__authors__), __date__) ) parser.add_argument('EVIDENCE_FILE',help="Path to evidence file") ...
(population, weights=None, *, cum_weights=None, k=1) method of random.Random instanceReturn a k sized list of population elements chosen with replacement.If the relative weights or cumulative weights are not specified,the selections are made with equal probability.No. 4 :Help on method ...
Python一般有三种断言函数:1.基本的布尔断言函数(assertEqual、assertNotEqual、assertTrue等)。2.比较断言(assertAlmostEqual、assertNotAlmostEqualassertGreater等)。3.复杂断言(assertListEqual、assertTupleEqual等),这些断言函数的常用应用有:状态断言、json断言、list断言、jsonpath断言、assert_that断言、post_xml断言、...
Python语言采用严格的缩进来表示程序逻辑。也就是我们所说的Python程序间的包含与层次关系。一般代码不要求缩进,顶行编写且不留空白。在if、while、for、def、class等保留字所在完整语句后通过英文的“:”结尾并在之后行进行缩进,表明后续代码与紧邻无缩进语句的所属关系。
请注意,"if not x:"语句只检查x是否为假值(如0、False、None、空字符串等),而不会检查x是否具有其中一种特定类型的值。如果您想检查x是否为一些特定值,可以使用等于(==)运算符。例如: ```python x = "Hello" if x == "Hello": print("x is equal to Hello") else: print("x is not equal to...