else else语句: if 语句,else语句 if expression: statement(s) else: statement(s) elif语句: if expression1: statement1(s) elif expression2(s): statements2(s) else: statement2(s) 注:Python使用缩进作为其语法分组的方法,建议使用4个空格 逻辑值(
In the above program, it is important to note that regardless the value of number variable, only one block of code will be executed.Python Nested if StatementsIt is possible to include an if statement inside another if statement. For example,number = 5 # outer if statement if number >= ...
The expression determines whether 10 is greater than five. Since it is, the indented statement runs, and "10 greater than 5" is output. Then, the unindented statement, which is not part of the if statement, is run, and "Program ended" is displayed. Result: >>> 10 greater than 5 Pro...
statement4(s) 将字符串进行大小写转换 a='abc' a.lower() 将字符串变为小写。 #!/usr/bin/python yn = raw_input("Please input [Yes/No]:") yn = yn.lower() if yn == 'y' or yn == 'yes': print "programe is running..." elif yn == 'n' or yn == 'no': print "programe ...
Two string values and an integer value are initialized in the program. Multiple “OR” operators are used with the combination of “if statement” to compare three different conditions. Whenever one of the conditions in the “if statement” is met, the ”OR” operator returns a ”True” valu...
Note python has this really weird error if you define local variable in a function same name as the global variable, program will promptUnboundLocalError. child class object overrides parent class methods input: classfruit:defprint(self):print('a')defeat(self):print('b')classapple(fruit):defpr...
win-amd64-3.10\Release\src\statement.obj statement.c C:\Program Files\Microsoft ...
As a result, in the above code, the IndexError exception is not being caught by the except statement; rather, the exception instead ends up being bound to a parameter named IndexError. Python code mistakes like this are common. The proper way to catch multiple exceptions in an except ...
Basic structure of “if” and associated conditions is shown below. if condition: then_this_statement elif condition: then_this_statement else: this_condition Example code #!/usr/bin/python a=10 b=12 c=15 if (a==b): print “a=b” elif (b==c): print “b=c” elif (c==a): ...
The caveat here is, if the finally clause executes a return or break statement, the temporarily saved exception is discarded.▶ For what?some_string = "wtf" some_dict = {} for i, some_dict[i] in enumerate(some_string): i = 10Output...