我正在尝试编写一个Python程序,该程序读取文件并将其内容打印为单个字符串,因为它将以C++格式转义。这是因为该字符串将从Python输出中复制并粘贴到C++程序(C++字符串变量定义)中。
基本上,我想转换
<!DOCTYPE html>
<html>
<style>
.card{
max-width: 400px;
min-height: 250px;
background: #02b875;
padding: 30px;
box-sizing: border-box;
color: #FFF;
margin:20px;
box-shadow: 0px 2px 18px -4px rgba(0,0,0,0.75);
}
</style>
<body>
<div class="card">
<h4>The ESP32 Update web page without refresh</h4><br>
<h1>Sensor Value:<span id="ADCValue">0</span></h1><br>
</div>
</body>
<script>
setInterval(function() {
// Call a function repetatively with 0.1 Second interval
getData();
}, 100); //100mSeconds update rate
function getData() {
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById("ADCValue").innerHTML =
this.responseText;
}
};
xhttp.open("GET", "readADC", true);
xhttp.send();
}
</script>
</html>
对此
<!DOCTYPE html>\n<html>\n<style>\n.card{\n max-width: 400px;\n min-height: 250px;\n background: #02b875;\n padding: 30px;\n box-sizing: border-box;\n color: #FFF;\n margin:20px;\n box-shadow: 0px 2px 18px -4px rgba(0,0,0,0.75);\n}\n</style>\n\n<body>\n<div class=\"card\">\n <h4>The ESP32 Update web page without refresh</h4><br>\n <h1>Sensor Value:<span id=\"ADCValue\">0</span></h1><br>\n</div>\n</body>\n\n<script>\nsetInterval(function() {\n // Call a function repetatively with 0.1 Second interval\n getData();\n}, 100); //100mSeconds update rate\n\nfunction getData() {\n var xhttp = new XMLHttpRequest();\n xhttp.onreadystatechange = function() {\n if (this.readyState == 4 && this.status == 200) {\n document.getElementById(\"ADCValue\").innerHTML =\n this.responseText;\n }\n };\n xhttp.open(\"GET\", \"readADC\", true);\n xhttp.send();\n}\n</script>\n</html>
使用此Python程序:
if __name__ == '__main__':
with open(<filepath>) as html:
contents = html.read().replace('"', r'\"')
print(contents)
print('')
print(repr(contents))
当“转义”双引号时,我得到的正是我想要的减去双反斜杠。我已经尝试了一些随机的东西,但是所有尝试都消除了两个反斜杠,或者根本不更改字符串。
我只想在字符串中的所有双引号之前添加一个反斜杠。在Python中甚至可能吗?
最佳答案
您可以使用str.translate
将有问题的字符映射到其转义的等效字符。由于python的转义和引号字符规则可能有点巴洛克式,所以我只是为了确保一致性而强行强加了它们。
# escapes for C literal strings
_c_str_trans = str.maketrans({"\n": "\\n", "\"":"\\\"", "\\":"\\\\"})
if __name__ == '__main__':
with open(<filepath>) as html:
contents = html.read().translate(_c_str_trans)
print(contents)
print('')
print(repr(contents))
关于python - 如何在C++中将Python字符串转换为其转义版本?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/60133856/