Python TypeError：无法连接邮件正文部分中的'str'和'list'对象

问题描述：

我试图在电子邮件正文部分的电子邮件中发送一些数据。我正在调用一个返回一个字符串的函数，我正在调用另一个返回一个列表的函数。我想将这些添加到邮件的邮件正文部分。我正在错误类型错误：不能连接“海峡”和“名单”的对象：Python TypeError：无法连接邮件正文部分中的'str'和'list'对象

Traceback (most recent call last): 
    File "E:/test_runners 2 edit project in progress add more tests/selenium_regression_test_5_1_1/Email/email_selenium_report.py", line 32, in <module> 
    report.send_report_summary_from_htmltestrunner_selenium_report2() 
    File "E:\test_runners 2 edit project in progress add more tests\selenium_regression_test_5_1_1\Email\report.py", line 520, in send_report_summary_from_htmltestrunner_selenium_report2 
    extract_testcases_from_report_htmltestrunner()) + "\n Report location = : \\storage-1\Testing\Selenium_Test_Report_Results\ClearCore_5_1_1\Selenium VM\IE11 \n") 
TypeError: cannot concatenate 'str' and 'list' objects

在我的电子邮件代码行的邮件正文部分是：

msg = MIMEText("\n ClearCore 5_1_1 Automated GUI Test_IE11_Selenium_VM \n " + extract_only_header_from_summary_from_report_htmltestrunner() + "\n extract_header_count__from_summary_from_report_htmltestrunner() \n" + list(
     extract_testcases_from_report_htmltestrunner()) + "\n Report location = : \\storage-1\Testing\Selenium_Test_Report_Results\ClearCore_5_1_1\Selenium VM\IE11 \n")

我的电子邮件地址码是：

from email.mime.text import MIMEText 
def send_report_summary_from_htmltestrunner_selenium_report2(): 
    print extract_only_header_from_summary_from_report_htmltestrunner() 
    print extract_header_count__from_summary_from_report_htmltestrunner() 
    all_testcases = list(extract_testcases_from_report_htmltestrunner()) 
    # print all_data 
    pprint.pprint(all_testcases) 
    msg = MIMEText("\n ClearCore 5_1_1 Automated GUI Test_IE11_Selenium_VM \n " + extract_only_header_from_summary_from_report_htmltestrunner() + "\n extract_header_count__from_summary_from_report_htmltestrunner() \n" + list(
      extract_testcases_from_report_htmltestrunner()) + "\n Report location = : \\storage-1\Testing\Selenium_Test_Report_Results\ClearCore_5_1_1\Selenium VM\IE11 \n") 

    msg['Subject'] = "ClearCore 5_1_1 Automated GUI Test" 
    msg['to'] = "[email protected]" 
    msg['From'] = "[email protected]" 

    s = smtplib.SMTP() 
    s.connect(host=SMTP_SERVER) 
    s.sendmail(msg['From'], msg['To'], msg.as_string()) 
    s.close()

返回列表的功能是：

def extract_testcases_from_report_htmltestrunner(): 
    filename = (r"E:\test_runners 2 edit project\selenium_regression_test_5_1_1\TestReport\ClearCore501_Automated_GUI_TestReport.html") 
    html_report_part = open(filename,'r') 
    soup = BeautifulSoup(html_report_part, "html.parser") 
    for div in soup.select("#result_table tr div.testcase"): 
      yield div.text.strip().encode('utf-8'), div.find_next("a").text.strip().encode('utf-8')

种

另2种功能，这我打电话返回一个字符串是：

def extract_only_header_from_summary_from_report_htmltestrunner(): 
    filename = (r"E:\test_runners 2 edit project\selenium_regression_test_5_1_1\TestReport\ClearCore501_Automated_GUI_TestReport.html") 
    html_report_part = open(filename,'r') 
    soup = BeautifulSoup(html_report_part, "html.parser") 
    table = soup.select_one("#result_table") 

    #Create list here... 
    results = [] 

    headers = [td.text for td in table.select_one("#header_row").find_all("td")[1:-1]] 
# print(" ".join(headers)) 

    #Don't forget to append header (if you want) 
    results.append(headers) 
    return results 


def extract_header_count__from_summary_from_report_htmltestrunner(): 
    filename = (r"E:\test_runners 2 edit project\selenium_regression_test_5_1_1\TestReport\ClearCore501_Automated_GUI_TestReport.html") 
    html_report_part = open(filename,'r') 
    soup = BeautifulSoup(html_report_part, "html.parser") 
    table = soup.select_one("#result_table") 

    #Create list here... 
    results = [] 
    for row in table.select("tr.passClass"): 
     #Store row string in variable and append before printing 
     row_str = " ".join([td.text for td in row.find_all("td")[1:-1]]) 
     results.append(row_str) 
#  print(row_str) 

    return results

我怎么能包括这些功能的数据到电子邮件的正文部分？我试图连接它，但没有奏效，因为它说你不能连接字符串和列表。

感谢，里亚兹

答

msg = MIMEText("\n ClearCore 5_1_1 Automated GUI Test_IE11_Selenium_VM \n " + extract_only_header_from_summary_from_report_htmltestrunner() + "\n extract_header_count__from_summary_from_report_htmltestrunner() \n" + list(
     extract_testcases_from_report_htmltestrunner()) + "\n Report location = : \\storage-1\Testing\Selenium_Test_Report_Results\ClearCore_5_1_1\Selenium VM\IE11 \n")

你被明确努力Concat的列表和字符串这是不可能的。

编辑所有你的函数返回一个列表而不是字符串。

如果您预期的结果是，你可以使用'\n'.join到列表中与'\n'列表变成一个字符串中的每个元素之间的字符串：

msg = MIMEText("\n ClearCore 5_1_1 Automated GUI Test_IE11_Selenium_VM \n " + 
       '\n'.join(extract_only_header_from_summary_from_report_htmltestrunner()) + 
       '\n'.join(extract_header_count__from_summary_from_report_htmltestrunner()) + 
       '\n'.join(extract_testcases_from_report_htmltestrunner()) + 
       "\n Report location = : \\storage-1\Testing\Selenium_Test_Report_Results\ClearCore_5_1_1\Selenium VM\IE11 \n")

我可能失去了一些'\n'格式化时，您应该添加他们回来，如果你需要他们。

如果你改变了函数的返回值转换为字符串，而不是调用MIMEText内部转换，例如

def extract_only_header_from_summary_from_report_htmltestrunner(): 
    filename = (r"E:\test_runners 2 edit project\selenium_regression_test_5_1_1\TestReport\ClearCore501_Automated_GUI_TestReport.html") 
    html_report_part = open(filename,'r') 
    soup = BeautifulSoup(html_report_part, "html.parser") 
    table = soup.select_one("#result_table") 

    results = [] 

    headers = [td.text for td in table.select_one("#header_row").find_all("td")[1:-1]] 

    results.append(headers) 

    # Use whatever character you want as a "separator" instead of '\n' 
    return '\n'.join(results)

我试过了你的函数extract_only_header_from_summary_report_htmltestrunner。我得到了错误TypeError：序列项0：期望的字符串，找到的列表 –

突出显示错误的行返回'\ n'.join（结果） –

@RiazLadhani哦。我错过了“结果”是列表清单的事实，尽管似乎没有必要这样做。你可以删除'results'变量，然后'return'\ n'.join（headers）'。 – DeepSpace

答

问题的说明也将是更具可读性一点你必须：

In [2]: lst_of_str = ['abc', 'def'] 

In [3]: s = 'g' 

In [4]: s + lst_of_str 
--------------------------------------------------------------------------- 
TypeError         Traceback (most recent call last) 
<ipython-input-4-45caf5564ff0> in <module>() 
----> 1 s + lst_of_str 

TypeError: cannot concatenate 'str' and 'list' objects 

In [5]: s + ''.join(lst_of_str) 
Out[5]: 'gabcdef'

问题是，您必须将您的列表显式转换为字符串。请注意，你不希望的结果清单上调用str：

In [6]: s + str(lst_of_str) 
Out[6]: "g['abc', 'def']"

编辑

在你的函数还要注意你有

yield div.text.strip().encode('utf-8'), div.find_next("a").text.strip().encode('utf-8')

它返回的(str, str)一个元组而不是一个str。如果你想把它们都包含在你的电子邮件正文中，你需要“让它们变平”。例如，

import itertools 
s + '\n'.join(itertools.chain(extract_testcases_from_report_htmltestrunner()))

我怀疑OP是否需要''['abc'，'def']“'作为输出。更好地使用'join'：''，'.join（['abc'，'def']）'''abc，def''。 – DeepSpace

@DeepSpace通过'str（list）'我试图指出他不想这样做。 – ShuaiYuan

Python TypeError：无法连接邮件正文部分中的'str'和'list'对象

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