Python, \ r, role \ r is generally used in the position () to do the processing for formatting the results to be printed, the print represents the cursor back to the start position of the Bank. Here implement a timer function, and no comparison differentiated r \ r of \.
[Python]
plain text view Copy the code
|
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import
time
# print中没有\r
for
i
in
range
(
1
,
11
):
print
(
'倒计时：%d'
%
(
10
-
i), end
=
'')
time.sleep(
1
)
|
[Plain Text]
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C:\Python36\python.exe G:/PycharmProjects/帖子/teizi04.py
倒计时：9倒计时：8倒计时：7倒计时：6倒计时：5倒计时：4倒计时：3倒计时：2倒计时：1倒计时：0
Process finished with exit code 0
|
[Python]
plain text view Copy the code
|
1
2
3
4
5
6
|
import
time
# print中有\r
for
i
in
range
(
1
,
11
):
print
(
'\r倒计时：%d'
%
(
10
-
i), end
=
'')
time.sleep(
1
)
|
[Plain Text]
plain text view Copy the code
C:\Python36\python.exe G:/PycharmProjects/帖子/teizi04.py
倒计时：0
Process finished with exit code 0
|
These results can be seen, when the print result does not wrap, no \ r The results are appended in the Bank last one, there \ r is the result of the Bank in the beginning of a print coverage of
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