python项目在两个设备中运行不同

Question

我有一个python项目，它爬网一些*.txt文件，并将每个*.txt文件中的一些单词放入一个新文件中。
这个项目在我的第一台设备上运行良好，输出是一个内容正确的.txt文件；但在我的第二台设备上，它运行正常，没有错误，但它创建了一个空的.txt文件。
python版本是相同的。两者都有windows10。你知道吗

代码如下：

import re

#pattern to find
pattern_name_start=r'id="p-name">'
pattern_name_end=r'</div>'

crawlfile=open("product-name.txt","w")


for j in range(10):
    #creating file locations and assigning it to $address
    address="pages/{0}.txt".format(j)

    #opening webpage file which is saved in .txt format and reading its content
    pagesfile=open(address,"r")
    pagetext=pagesfile.read()

    #establishing first character location of the iran-code and generating gs1 code and writing it in the file
    pn=""
    product_name=""
    matchname=re.search(pattern_name_start,pagetext)
    if matchname:
        strtchar=matchname.start()

        #49 is the number of id="p-name characters + number of spaces
        for i in range (49,350):
            pn=pn+pagetext[strtchar+i]

        matchnameend=re.search(pattern_name_end,pn)

        if matchnameend:
            endchar=matchnameend.start()

        #32 is the number of spaces
        for i in range(endchar-33):
            product_name=product_name+pn[i]

        crawlfile.write(product_name+ '\n')

    pagesfile.close()

crawlfile.close()