我在写入HTML文件时遇到问题。
我希望能够将我的代码放在我用HTML编写的代码中，但是我的代码只会在此定义中没有任何While / If语句时执行。如果我确实有Whiles / Ifs，我的HTML文件就会变成空白。我不知道为什么会这样，我似乎无法找到解决方法。
有没有办法使用Whiles / Ifs而不使我的代码删除我文件中的所有内容，而是让它写出我想要的内容？
def invoice_creator_window():
global total_cost, total_cost_list, list_of_items, invoice_created
invoice_created = Toplevel()
invoice_created.focus_set()
invoice_created.resizable(width = True, height = False)
invoice_created.title("Invoice Created")
invoice_created.geometry("300x300")
invoice_created.geometry("+400+400")
invoice_created.configure(bg = "limegreen")
currentDisplay = 10
print(total_cost, total_cost_list, list_of_items)
done = Label(invoice_created, text = "Items have been purchased. Invoice has been created. Please check this program's file location.")
invoice_created = Button(invoice_created, text = "Done", bg = "white", command = close_window)
#
done.grid(row = 1, column = 1, padx = 7.5, pady = space_between)
invoice_created.grid(row = 2, column = 1, padx = 7.5, pady = space_between)
# This section is for the invoice creation with HTML.
html_formatting_start = """<!DOCTYPE html>
<html>
<head>
<title>Games R Us - Invoice</title>
</head>
<body>
<style>
body {background-color: #F7D358;}
h1 {color: #775A03;}
p {color: ; border: 1px solid #775A03; padding: 15px; width: 650px}
</style>
<center>
<h1>Games R Us - Invoice Document</h1>
"""
counter = 0
while len(list_of_items) > 0:
global html_formatting_mid
print(counter)
html_formatting_mid = ("""
<h3>
<p>
<img src="https://steamcdn-a.akamaihd.net/steam/apps/211420/header.jpg?t=1483694369"</img>
<br>""" + str(list_of_items[counter]) + """<br>
<i>$""" + str(total_cost_list[counter]) + """ AUD</i>
</p>
</h3>
""")
if counter >= len(list_of_items) - 1:
return
else:
counter += 1
html_formatting_end = """
<h2>In Total: $""" + str(total_cost) +""" AUD</h2>
<br>
<b>Information Grabbed from These Links: </b>
<a href="https://store.steampowered.com/explore/new/">Steam's New Releases</a> [LIVE] -
<a href="https://store.steampowered.com/search/?filter=topsellers">Steam's Top Sellers</a> [LIVE] -
<a href="https://www.umart.com.au/Headphones_147C.html">Umart's Headphones</a> [PRE-DOWNLOADED] -
<a href="https://www.umart.com.au/Microphones_496C.html">Umart's Microphones</a> [PRE-DOWNLOADED]
</center>
</body>
</html>"""
invoice_creation = open(invoice_file, "w")
invoice_creation.write(html_formatting_start)
invoice_creation.write(html_formatting_mid)
invoice_creation.write(html_formatting_end)
invoice_creation.close()
#############################################################################
button_buy = Button(welcome_window, text = "Buy", fg = "white", bg = "goldenrod", font = gui_font_10,
command = invoice_creator_window)
注意：“total_cost_list”和“list_of_items”都是列表。 “total_cost”是一个值。不要过分担心这些问题的背景，但我想澄清它们可能会影响任何事情。
答案 0 :(得分：0)
以下是代码的固定版本，尽可能简单。
from tkinter import *
import webbrowser
root = Tk ()
space_between, invoice_file = 5, "Invoice.html"
total_cost, total_cost_list, list_of_items = 10, [1, 9], ["Something", "Something 2"]
def close_window (): root.destroy ()
def invoice_creator_window():
global total_cost, total_cost_list, list_of_items, invoice_created
invoice_created = Toplevel()
invoice_created.focus_set()
invoice_created.resizable(width = True, height = False)
invoice_created.title("Invoice Created")
invoice_created.geometry("300x300")
invoice_created.geometry("+400+400")
invoice_created.configure(bg = "limegreen")
currentDisplay = 10
print(total_cost, total_cost_list, list_of_items)
done = Label(invoice_created, text = "Items have been purchased. Invoice has been created.")
invoice_created = Button(invoice_created, text = "Done", bg = "white", command = close_window)
#
done.grid(row = 1, column = 1, padx = 7.5, pady = space_between)
invoice_created.grid(row = 2, column = 1, padx = 7.5, pady = space_between)
# This section is for the invoice creation with HTML.
html_formatting_start = """<!DOCTYPE html>
<html>
<head>
<title>Games R Us - Invoice</title>
</head>
<body>
<style>
body {background-color: #F7D358;}
h1 {color: #775A03;}
p {color: ; border: 1px solid #775A03; padding: 15px; width: 650px}
</style>
<center>
<h1>Games R Us - Invoice Document</h1>
"""
counter = 0
html_formatting_mid = ""
while len(list_of_items) > 0:
print(counter)
html_formatting_mid += """
<h3>
<p>
<img src="https://steamcdn-a.akamaihd.net/steam/apps/211420/header.jpg?t=1483694369"</img>
<br>""" + str(list_of_items[counter]) + """<br>
<i>$""" + str(total_cost_list[counter]) + """ AUD</i>
</p>
</h3>
"""
if counter >= len(list_of_items) - 1:
break
else:
counter += 1
html_formatting_end = """
<h2>In Total: $""" + str(total_cost) +""" AUD</h2>
<br>
<b>Information Grabbed from These Links: </b>
<a href="https://store.steampowered.com/explore/new/">Steam's New Releases</a> [LIVE] -
<a href="https://store.steampowered.com/search/?filter=topsellers">Steam's Top Sellers</a> [LIVE] -
<a href="https://www.umart.com.au/Headphones_147C.html">Umart's Headphones</a> [PRE-DOWNLOADED] -
<a href="https://www.umart.com.au/Microphones_496C.html">Umart's Microphones</a> [PRE-DOWNLOADED]
</center>
</body>
</html>"""
invoice_creation = open(invoice_file, "w")
invoice_creation.write (html_formatting_start + html_formatting_mid + html_formatting_end)
invoice_creation.close ()
webbrowser.open (invoice_file)
#############################################################################
button_buy = Button(root, text = "Buy", fg = "white", bg = "goldenrod",
command = invoice_creator_window).pack ()
root.mainloop ()
答案 1 :(得分：0)
我找到了解决方案。
def invoice_creator_window():
global total_cost, total_cost_list, list_of_items, invoice_created
invoice_created = Toplevel()
invoice_created.focus_set()
invoice_created.resizable(width = True, height = False)
invoice_created.title("Invoice Created")
invoice_created.geometry("300x300")
invoice_created.geometry("+400+400")
invoice_created.configure(bg = "limegreen")
currentDisplay = 10
print(total_cost, total_cost_list, list_of_items)
done = Label(invoice_created, text = "Items have been purchased. Invoice has been created. Please check this program's file location.")
invoice_created = Button(invoice_created, text = "Done", bg = "white", command = close_window)
#
done.grid(row = 1, column = 1, padx = 7.5, pady = space_between)
invoice_created.grid(row = 2, column = 1, padx = 7.5, pady = space_between)
# This section is for the invoice creation with HTML.
html_formatting_start = """<!DOCTYPE html>
<html>
<head>
<title>Games R Us - Invoice</title>
</head>
<body>
<style>
body {background-color: #F7D358;}
h1 {color: #775A03;}
p {color: ; border: 1px solid #775A03; padding: 15px; width: 650px}
</style>
<center>
<h1>Games R Us - Invoice Document</h1>
"""
counter = 0
html_formatting_mid = ""
for items in list_of_items:
print(counter)
html_formatting_mid += ("""
<h3>
<p>
<img src="https://steamcdn-a.akamaihd.net/steam/apps/211420/header.jpg?t=1483694369"</img>
<br>""" + str(list_of_items[counter]) + """<br>
<i>$""" + str(total_cost_list[counter]) + """ AUD</i>
</p>
</h3>
""")
counter += 1
html_formatting_end = """
<h2>In Total: $""" + str(total_cost) +""" AUD</h2>
<br>
<b>Information Grabbed from These Links: </b>
<a href="https://store.steampowered.com/explore/new/">Steam's New Releases</a> [LIVE] -
<a href="https://store.steampowered.com/search/?filter=topsellers">Steam's Top Sellers</a> [LIVE] -
<a href="https://www.umart.com.au/Headphones_147C.html">Umart's Headphones</a> [PRE-DOWNLOADED] -
<a href="https://www.umart.com.au/Microphones_496C.html">Umart's Microphones</a> [PRE-DOWNLOADED]
</center>
</body>
</html>"""
invoice_creation = open(invoice_file, "w")
invoice_creation.write(html_formatting_start)
invoice_creation.write(html_formatting_mid)
invoice_creation.write(html_formatting_end)
invoice_creation.close()
#############################################################################
button_buy = Button(welcome_window, text = "Buy", fg = "white", bg = "goldenrod", font = gui_font_10,
command = invoice_creator_window)
我回到了旧的for循环使用并尝试使用它。除了这个时候，我添加了html_formatting_mid + =（“”“到它，然后在for循环之前，只添加了html_formatting_mid =”“，就像Minion Jim所示。
现在完全可以使用。
答案 2 :(得分：0)
简短的回答是，你可以用附加模式写。 open (filename, 'a')代替open (filename, 'w')。这将添加到文件中已有的内容，因此您可能希望先截断它。