blocks|key|4492818|text|\r字符是回车符，这意味着它会将光标返回到当前行的开头。如果你想重画光标所在的线，这是可以的，但如果你想重画其他线，这就不好了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4492819|要执行所需的操作，需要使用终端库，如Linux上的curses或Windows上的控制台API。如果你只是在Linux上工作，想要一种更简单的方式来访问颜色、光标移动和输入，而不是回声，那么你可以做的比试试https://pypi.python.org/pypi/blessed/更糟糕。|offset|length|4492820|如果你需要一个跨平台的API来做这类事情，目前还没有一种纯Python的方法来处理它，但我正在研究一种方法。https://github.com/peterbrittain/asciimatics中的Screen类以跨平台的方式涵盖了上述所有功能。|4492821|entityMap|0|LINK|mutability|MUTABLE|url|https://pypi.python.org/pypi/blessed/|1|https://github.com/peterbrittain/asciimatics^0|0|2V|11|0|0|1I|18|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]]|A|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@$D|X|E|Y|1|Z]]|A|$]]|$1|H|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]|P|$5|K|L|M|A|$N|Q]]]]

The \r character is a carriage return, which means it will return the cursor to the start of the current line. That's OK if you want to redraw the line the cursor is on, but no good if you want to redraw other lines.

To do what you want, you need to use a terminal library like curses on Linux or the console API on Windows. If you are just working on Linux and want a simpler way to access colours, cursor movement and input without echo, you could do worse than try out blessed (<a href="https://pypi.python.org/pypi/blessed/" rel="nofollow">https://pypi.python.org/pypi/blessed/</a>).

If you need a cross platform API to do this sort of thing, there is no pure Python way to handle it all yet, but I am working on one. The Screen class in <a href="https://github.com/peterbrittain/asciimatics" rel="nofollow">https://github.com/peterbrittain/asciimatics</a> cover all the features above in a cross-platform manner.

blocks|key|4493941|text|这将是一个有点棘手的工作，这将是所有的终端，但如果您的理解ANSI转义代码像我的一样，这可能会工作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4493942|...
++++if+new_word+==+word:
++++++++print+"You+won!"
++++else:
++++++++print+'\033[F'*7
++++++++print+'+'*17+%2B+'\b'*17+%2B+'\033[F'
++++++++test_letter()|code-block|syntax|javascript|4493943|这依赖于ANSI码F：将光标上移一行；一旦到达行首，仅使用退格符(\b)就不起作用。第一个print返回到输入行，第二个删除先前输入的字符。|offset|length|style|CODE|4493944|entityMap^0|0|0|9|1|X|2|19|5|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]|$I|T|J|U|K|L]|$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|N|$]]

It would be a bit tricky to make this work for all terminals, but if yours understands ANSI escape codes like mine does, this might work:

<pre><code>...
 if new_word == word:
 print "You won!"
 else:
 print '\033[F'*7
 print ' '*17 + '\b'*17 + '\033[F'
 test_letter()
</code></pre>

This relies on the ANSI code <code>F</code>: move the cursor up one line; backspaces (<code>\b</code>) alone have no effect once the beginning of the line is reached.
The first <code>print</code> takes you back up to the input line and the second deletes the character that was previously entered.

blocks|key|4492865|text|您可以使用转义字符\033c，这将删除终端窗口中的代码，并将光标放在左上角。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4492866|例如下面的代码：|4492867|++++import+time

++++print("text+1")
++++time.sleep(1)
++++print('\033c')
++++time.sleep(1)
++++print("text+2")|code-block|syntax|javascript|4492868|此代码将打印"text+1“，等待一秒，清除控制台，等待一秒，然后打印"text+2”。|4492869|所以你可以使用下面的代码|4492870|def+test_letter():
++print("\033c")
++global+guesses
++letter+=+raw_input("Guess+a+letter:+")
++guesses+%2B=+letter
++new_word+=+compare_words()
++print+"\nCurrent+guesses:+%25s"+%25+guesses
++print+"%25s\n\n"+%25+new_word
++if+new_word+==+word:
+++++print+"You+won!"
++else:
++++test_letter()|4492871|这段代码要做的是清除控制台，让用户猜测一个数字，显示您想要的那段四行代码，然后再次清除控制台。|4492872|我希望这能帮到你!|4492873|entityMap^0|9|5|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|13|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|14|8|@]|D|@]|E|$]]|$1|Q|3|R|5|J|7|15|8|@]|D|@]|E|$K|L]]|$1|S|3|T|5|6|7|16|8|@]|D|@]|E|$]]|$1|U|3|V|5|6|7|17|8|@]|D|@]|E|$]]|$1|W|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|X|$]]

You can use the escape characters <code>\033c</code> and this will erase the code in a terminal window and put the cursor at the top left.

For example this code:

<pre><code> import time

 print("text 1")
 time.sleep(1)
 print('\033c')
 time.sleep(1)
 print("text 2")
</code></pre>

This code will print "text 1" wait one second, clear the console, wait one second and then print "text 2".

So you could use the code

<pre><code>def test_letter():
 print("\033c")
 global guesses
 letter = raw_input("Guess a letter: ")
 guesses += letter
 new_word = compare_words()
 print "\nCurrent guesses: %s" % guesses
 print "%s\n\n" % new_word
 if new_word == word:
 print "You won!"
 else:
 test_letter()
</code></pre>

What this code will do is clear the console, ask the person to guess a number, display that four line piece of code that you wanted and then clear the console again.

I hope this helps!

blocks|key|4492954|text|如果您想从特定位置替换特定行的内容，则可以使用ANSI+Escape+Codes。为此，请确保您使用的是stdout.write()而不是print()。您可以使用以下import语句访问此方法：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4492955|from+sys+import+stdout|code-block|syntax|javascript|4492956|然后，为了导航“光标”(使用此方法打印文本的位置)，使用转义代码\u001b[<L>;<C>H+(或\u001b[<L>;<C>F，其中<L>和<C>分别表示所需位置的行号和字符索引)。例如，如果要将光标设置为第3行；第2个字符，则可以执行以下操作。|4492957|stdout.write(u"\u001b[3;2H")|4492958|请注意双引号字符串前面的u。这在Python+2.x中是必需的，因为它包含特殊字符，但在Python+3及更高版本中可以省略。|4492959|将光标设置在所需位置后，您所写的任何内容都将替换当前驻留在该位置的字符。这一点很重要，因为如果替换字符串比原始字符串短，则可能会以遗留字符结尾。处理此问题的最简单方法是在空格中填充打印字符串。|4492960|完成此操作后，您可能应该使用相同的方法将光标移回stdout的末尾，并使用stdout.flush()刷新输出。|4492961|示例|4492962|假设我在终端上有以下输出：|4492963|Name:+Shakespeare
Score:+0

Some+text...|4492964|我可以通过运行以下命令将分数更改为1：|4492965|stdout.write(u"\u001b[2;8H")
stdout.write("1")
stdout.write(u"\u001b[5;0H")
stdout.flush()|4492966|同样，在Python+3和更高版本中，u是可选的。|4492967|备注|4492968|这种行和字符编号方法适用于当前显示在终端中的所有输出。这意味着，如果您从另一个程序或命令中留下了任何东西，例如|4492969|$+python+game.py|4492970|因此，最好在程序开始时使用print(u"\033c")或os.system("clear")之类的命令清除输出，否则可能会写错行。|4492971|此外，如果您要在其他任何地方使用stdout.write()，如果您想转到下一行，请记住将\n放在末尾。|4492972|entityMap|0|LINK|mutability|MUTABLE|url|https://en.wikipedia.org/wiki/ANSI_escape_code^0|1G|E|1X|7|2C|6|N|H|0|0|0|W|F|1E|F|1W|3|20|3|0|0|C|1|G|A|18|8|0|0|O|6|11|E|0|0|0|0|H|1|0|0|4|8|J|1|0|0|0|0|D|F|T|I|0|G|E|19|2|0^^$0|@$1|2|3|4|5|6|7|1O|8|@$9|1P|A|1Q|B|C]|$9|1R|A|1S|B|C]|$9|1T|A|1U|B|C]]|D|@$9|1V|A|1W|1|1X]]|E|$]]|$1|F|3|G|5|H|7|1Y|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1Z|8|@$9|20|A|21|B|C]|$9|22|A|23|B|C]|$9|24|A|25|B|C]|$9|26|A|27|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|28|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|29|8|@$9|2A|A|2B|B|C]|$9|2C|A|2D|B|C]|$9|2E|A|2F|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|6|7|2G|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|2H|8|@$9|2I|A|2J|B|C]|$9|2K|A|2L|B|C]]|D|@]|E|$]]|$1|U|3|V|5|6|7|2M|8|@]|D|@]|E|$]]|$1|W|3|X|5|6|7|2N|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|H|7|2O|8|@]|D|@]|E|$I|J]]|$1|10|3|11|5|6|7|2P|8|@$9|2Q|A|2R|B|C]]|D|@]|E|$]]|$1|12|3|13|5|H|7|2S|8|@]|D|@]|E|$I|J]]|$1|14|3|15|5|6|7|2T|8|@$9|2U|A|2V|B|C]|$9|2W|A|2X|B|C]]|D|@]|E|$]]|$1|16|3|17|5|6|7|2Y|8|@]|D|@]|E|$]]|$1|18|3|19|5|6|7|2Z|8|@]|D|@]|E|$]]|$1|1A|3|1B|5|H|7|30|8|@]|D|@]|E|$I|J]]|$1|1C|3|1D|5|6|7|31|8|@$9|32|A|33|B|C]|$9|34|A|35|B|C]]|D|@]|E|$]]|$1|1E|3|1F|5|6|7|36|8|@$9|37|A|38|B|C]|$9|39|A|3A|B|C]]|D|@]|E|$]]|$1|1G|3|-4|5|6|7|3B|8|@]|D|@]|E|$]]]|1H|$1I|$5|1J|1K|1L|E|$1M|1N]]]]

If you want to replace the content of a specific line, from a specific position, you can use <a href="https://en.wikipedia.org/wiki/ANSI_escape_code" rel="nofollow noreferrer">ANSI Escape Codes</a>. To do this, make sure that you're using <code>stdout.write()</code> rather than <code>print()</code>. You can access this method by using the following <code>import</code> statement:

<pre><code>from sys import stdout
</code></pre>

Then, in order to navigate the "cursor" (where text printed with this method will go), use the escape code <code>\u001b[&lt;L&gt;;&lt;C&gt;H</code> (or <code>\u001b[&lt;L&gt;;&lt;C&gt;F</code> where <code>&lt;L&gt;</code> and <code>&lt;C&gt;</code> represent the respective line number and character index of the desired position. For example, if you wanted to set the cursor to line 3; character 2, you would do the following.

<pre><code>stdout.write(u"\u001b[3;2H")
</code></pre>

Note the <code>u</code> proceeding the double-quoted string. This is required in <code>Python 2.x</code>, since it contains special characters, but can be omitted in <code>Python 3</code> and above.

Once you have set the cursor to be at the desired position, anything you write will replace the characters that currently reside there. This is important, because if the replacement string is shorter than the original, you may end up with trailing legacy characters. The simplest way to deal with this is to pad the printing string in spaces.

After doing this you should probably move the cursor back to the end of <code>stdout</code>, using the same method, and flush the output with <code>stdout.flush()</code>.

<h2>Example</h2>

Let's say I had the following output on the terminal:

<pre><code>Name: Shakespeare
Score: 0

Some text...
</code></pre>

I could change the score to <code>1</code> by running the following:

<pre><code>stdout.write(u"\u001b[2;8H")
stdout.write("1")
stdout.write(u"\u001b[5;0H")
stdout.flush()
</code></pre>

Again, the <code>u</code> is optional in <code>Python 3</code> and up.

<h2>Notes</h2>

This line-and-character-number method applies to all output currently being displayed in the terminal. This means that if you have anything left from another program or command, for example

<pre><code>$ python game.py
</code></pre>

so it is best to clear the output at the start of your program, with something like <code>print(u"\033c")</code>, or <code>os.system("clear")</code>, otherwise you may end up writing to the wrong line.

Also, if your going to use <code>stdout.write()</code> anywhere else, remember to put <code>\n</code> at the end if you want to go to the next line.

I'm working on writing a simple Hangman game in Python from what I know so far (I'm doing Learn Python the Hard Way) and so far I have this:

<pre><code>from sys import argv
import random

script_name, dict_file = argv

hang_list = open(dict_file).read().splitlines()
hang_list = filter(None, hang_list) 
word = random.choice(hang_list)

guesses = ''

def compare_words():
 global guesses
 new_word = ''
 for char in word:
 if char in guesses: 
 new_word += char
 else:
 new_word += "_"
 return new_word

def test_letter():
 global guesses
 letter = raw_input("Guess a letter: ")
 guesses += letter
 new_word = compare_words()
 print "\nCurrent guesses: %s" % guesses
 print "%s\n\n" % new_word
 if new_word == word:
 print "You won!"
 else:
 test_letter()


test_letter()
</code></pre>

I've yet to implement the scoring system (piece of cake) but I have an issue with the layout. As you can tell, this will print "Current guesses: " and the new word each time; however, what I want is four lines that look like:

<pre><code>Guess a letter:
Guesses: abczy
__c__b_
</code></pre>

And have those three lines keep updating. However, I am having trouble figuring out how to make the print replace stdout. I believe I need to use the <code>\r</code> escape character, yet I've tried placing that in various places but can't get it to work. So, how should I modify this to get it to replace? I would prefer not to just clear, as then it still makes things a bit messy; I want to just replace what's there. Thanks!

Hangman in python: have lines be replaced?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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到目前为止，我正在用Python编写一个简单的Hangman游戏(我正在用艰难的方式学习Python )，到目前为止，我有这样的经验：from sys import argvimport randomscript_name, dict_file = argvhang_list = open(dict_file).rea...

问python中的绞刑者:行被替换了吗？
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