# 变量定义和赋值x = 10y = "Hello, Python!"z = True# 条件语句if x > 5:print("x is greater than 5")else:print("x is less than or equal to 5")# 循环语句for i in range(5):print(i)i = 0while i < 5:print(i)i += 1 通过学习和实践这些基础知识,你将逐步建立起 Python 编程...
Less than:a < b Less than or equal to:a <= b Greater than:a > b Greater than or equal to:a >= b These conditions can be used in several ways, most commonly in "if statements" and loops. An "if statement" is written by using theifkeyword. ...
Equal x == y != Not equal x != y > Greater than x > y < Less than x < y >= Greater than or equal to x >= y <= Less than or equal to x <= y 逻辑运算符 Operator Description Example and Returns True if both statements are true x < 5 and x < 10 or Returns True if ...
db.collection.find({ "field" : { $lte: value } } ); // less than or equal to : field <= value 如查询j大于3,小于4: db.things.find({j : {$lt: 3}}); db.things.find({j : {$gte: 4}}); 也可以合并在一条语句内:
1、提前结束函数执行 在函数体中，return语句不仅可以返回值，还可以提前结束函数的执行。示例如下：def check_number(num):if num > 10:return"Number is greater than 10"else:return"Number is less than or equal to 10"result = check_number(15)print(result) # 输出："Number is greater than 10"在...
a is less than or equal to b 此方法可以比较两个对象的值。返回对/错。比较可直接被用作if-else语句中的条件。4. 列表推导式 与其：>>>arr_list = [1,4,7]>>> result = []>>> for i in arr_list:... result.append(i*2)...>>> result [2, 8, 14]不如：>>>result = [x*2 ...
当if判断条件为True,执行true_expressions语句; 如果为False,将执行else的内部的false_expressions。 实例¶ xxxxxxxxxx 1 x=1 2 y=2 3 z=3 4 ifx>y: 5 print('x is greater than y') 6 else: 7 print('x is less or equal to y')
logical operators< #less than < #less than> #greater than > #greater than<= #less than or equal to <= #less than or equal to== #is equal to == #is equal to!= #is not equal to != #is not equal to& #and & #and| #or ...
x=5y=12if(x>0andx<10)or(y>0andy<10):print("x or y is between 0 and 10")else:print("x and y are either both less than or equal to 0, or both greater than or equal to 10") 1. 2. 3. 4. 5. 6. 7. 在上面的示例中,如果变量x大于0且小于10,或者变量y大于0且小于10,则条...
# 正确的缩进ifx>10:print("x is greater than 10")else:print("x is less than or equal to 10")# 错误的缩进ifx>10:print("x is greater than 10")else:print("x is less than or equal to 10") 解决方法:使用一个统一的缩进方式,比如四个空格或者一个制表符,并且保持代码的对齐和整洁。 2. ...