The simplest and most used conditional statement in Python is the"if "statement. A lot of the times, you have to decide whether to do"A "or do"B ". The"if "statement, as its name suggests evaluates the expression. Moreover, it executes the conditional block only when the statement is...
# Shorthand if-else statement in Python The ternary operator can also be used if you need a shorthand if-else statement. The ternary operator will return the value to the left if the condition is met, otherwise, the value in the else statement is returned. ...
In the above case Python evaluates each expression (i.e. the condition) one by one and if a true condition is found the statement(s) block under that expression will be executed. If no true condition is found the statement(s) block under else will be executed. In the following example,...
elifdo # 缩进等级与do语法块一致 else: elsedo 参数 elifdo : 当前elif语句对应的python代码...
if username in allowed_users: print "Access granted" else: print "Access denied" Python If statement Code Block To get an easy overview of Pythons if statement code block if: [do something] ... ... elif [another statement is true]: [do...
grades = {"A": 0.9, "B": 0.8, "C": 0.7, "D": 0.6, "E": 0.5} def convert_grade(scr): for ltrgrd, numgrd in grades.items(): if scr >= numgrd: return ltrgrd return "F" - Nico 2 请注意,如果您使用的是Python 3.6或更低版本,则应该执行sorted(grades.items()),因为字典不能...
Also, if you remember our first example while explaining theifstatement, the savings bank account example. There is actually a quicker way to do it, a one-line way because, it's python. The following is the logic: if (saving > withdraw) then saving = (saving - withdraw), else saving...
Here is an example of the "case" statement that kill a "sleep" process by sending signals and it's PID. #! /bin/bash if [ $# -lt 2 ] then echo "Usage: $0 signal# PID" exit fi case $1 in 1) echo "SIGHUP" kill -SIGHUP $2 ;; 2) echo "SIGINT" kill -SIGINT $2 ;; ...
elifdo # 缩进等级与do语法块一致 else: elsedo 参数 elifdo : 当前elif语句对应的python代码...