6.2 条件语句 所谓条件语句(Conditional Statement),顾名思义,就是依据某个条件来执行指定的代码。 首先看只有一个条件分支的语句结构,如图6-2-1所示: if:发起条件语句的关键词,注意只能是小写字母。 bool(expression)如果表达式的布尔值是True,就执行此条件分支下面的语句块;否则不执行。 :,英文状态下的冒号,表示...
So far, we have presented a Boolean option for conditional statements, with eachifstatement evaluating to either true or false. In many cases, we will want a program that evaluates more than two possible outcomes. For this, we will use anelse ifstatement, which is written in Python aselif....
In a Python program, the if statement is how you perform this sort of decision-making. It allows for conditional execution of a statement or group of statements based on the value of an expression.The outline of this tutorial is as follows:...
Decision-making helps in deciding the flow of execution of the program. Decision-making is implemented using if else in Python. The conditional logic in Python is primarily based on the ‘if else’ structure. Starting from the if statement, it is the most basic decision-making statement. It ...
Write a Python program to guess a number between 1 and 9. Note : User is prompted to enter a guess. If the user guesses wrong then the prompt appears again until the guess is correct, on successful guess, user will get a "Well guessed!" message, and the program will exit. ...
Continuing on the same example, we will try to put up one more check in case the"if "conditional statement fails. Guess the output for the following code: age =35if(age ==40): print("The age is 40") elif(age ==35): print("Age is 35") ...
Control statements are statements that control the flow of a program's execution based on the results of logical comparisons. Statements differ fundamentally from the expressions that we have studied so far. They have no value. Instead of computing something, executing a control statement determines ...
Conditional statements are programming structures that can make decisions. Without conditionals and other control statements, a program would execute in a deterministic manner, one statement after the next, every time. Conditionals allow different inputs to directly affect the program’s behavior. They ...
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'C:\\Program Files (x86)\\Nmap', 'C:\\Users\\Administrator\\.dotnet\\tools', 'd:\\Program Files\\JetBrains\\PyCharm 2022.2.2\\bin'] 5258 INFO: Looking for eggs 5258 INFO: Using Python library D:\develop\python\Python39\python39.dll ...