Question

我有一个脚本可以完美地打印变量（由用户设置）。

os.system('clear')

print "Motion Detection Started"
print "------------------------"
print "Pixel Threshold (How much)   = " + str(threshold)
print "Sensitivity (changed Pixels) = " + str(sensitivity)
print "File Path for Image Save     = " + filepath
print "---------- Motion Capture File Activity --------------"

我现在希望通过电子邮件将此代码发送给自己以确认运行时间。我已使用email.mimieText和multipart在脚本邮件中添加了该邮件。但输出不再仅仅显示代码的相对变量。

    body =  """ Motion Detection Started \n Pixel Threshold (How much)   = " + str(threshold) \n    Sensitivity (changed Pixels) = " + str(sensitivity) \n File Path for Image Save     = " + filepath """

我确定它是“”包装，但不清楚我应该使用什么呢？

Answer 1

in python """引用意味着从字面上理解它们之间的所有内容。

此处最简单的解决方案是定义字符串myString=""，然后在每个打印语句中，您可以使用myString=myString+"whatever I want to append\n"附加到字符串而不是打印

Answer 2

应该是：

body =  " Motion Detection Started \n Pixel Threshold (How much)   = " + str(threshold) + \
        "\n Sensitivity (changed Pixels) = " + str(sensitivity) + \
        "\n File Path for Image Save     = " + filepath

Answer 3

当你执行以下操作时，你告诉它所有字符串的一部分（请注意代码如何突出显示）：

body =  """ Motion Detection Started \n Pixel Threshold (How much)   = " + str(threshold) \n    Sensitivity (changed Pixels) = " + str(sensitivity) \n File Path for Image Save     = " + filepath """

您需要将变量实际添加到字符串中，就像在print语句中连接它们一样。

body =  "Motion Detection Started \n Pixel Threshold (How much)   = " + str(threshold) + " \n    Sensitivity (changed Pixels) = " + str(sensitivity) + "\n File Path for Image Save     = " + filepath

你也可以string formatting：

body = "Motion Detection Started\nPixel Threshold (How much) = {}\nSensitivity (changed Pixels) = {}\nFile Path for Image Save = {}".format(threshold, sensitivity, filepath)

Answer 4

如果您希望电子邮件代码更具可重用性和强大功能， Template strings 可能会对您有所帮助。例如，将电子邮件文本作为模板保存在单独的文件template.txt：

中

Motion Detection Started
------------------------------------------------------
Pixel Threshold (How much)   =  $threshold
Sensitivity (changed Pixels) =  $sensitivity
File Path for Image Save     =  $filepath
---------- Motion Capture File Activity --------------

并在您的代码中创建一个类，用于与一个或多个类实例一起发送电子邮件（您可以拥有多个模板）：

import string

class DebugEmail():    
    def __init__(self, templateFileName="default_template.txt"):
        with open(templateFileName) as f:
            self.template = string.Template(f.read())

    def send(self, data):
        body = self.template.safe_substitute(data)
        print(body) # replace by sending email

debugEmail1 = DebugEmail("template.txt")

# and test it like this:

threshold = 1
sensitivity = 1
debugEmail1.send(locals())

sensitivity = 200
filepath = "file"
debugEmail1.send(locals())

Python打印输出到电子邮件

4 个答案: