大约有 45,000 项符合查询结果（耗时：0.0763秒） [XML]
Why does substring slicing with index out of range work?
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You're correct! 'example'[3:4] and 'example'[3] are fundamentally different, and slicing outside the bounds of a sequence (at least for built-ins) doesn't cause an error.
It might be surprising at first, but it makes sense when you think about it. Indexi...
What does the regex \S mean in JavaScript? [duplicate]
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\s matches whitespace (spaces, tabs and new lines). \S is negated \s.
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How to change a string into uppercase
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Please Note: The .upper() and .lower() functions do not modify the original str i.e. use s = s.upper() for effective results
– Chaitanya
Jan 8 at 23:21
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Get Output From the logging Module in IPython Notebook
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Does basic configuration for the logging system by creating a
StreamHandler with a default Formatter and adding it to the root
logger. The functions debug(), info(), warning(), error() and
critical() will call basicConfig() automatically if no handlers are
defined for the root logger.
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Removing carriage return and new-line from the end of a string in c#
How do I remove the carriage return character (\r) and the new line character (\n) from the end of a string?
12 Answers
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Django Setup Default Logging
...': 1,
'disable_existing_loggers': True,
'formatters': {
'standard': {
'format': '%(asctime)s [%(levelname)s] %(name)s: %(message)s'
},
},
'handlers': {
'default': {
'level':'DEBUG',
'class':'logging.handlers.RotatingFileHand...
inserting characters at the start and end of a string
I am new and trying to find a way to insert a number of L's at the beginning and end of a string. So if I have a string which says
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Read Excel File in Python
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A somewhat late answer, but with pandas it is possible to get directly a column of an excel file:
import pandas
import xlrd
df = pandas.read_excel('sample.xls')
#print the column names
print df.columns
#get the values for a given column
values = df['Arm_id']...
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
I have taken Problem #12 from Project Euler as a programming exercise and to compare my (surely not optimal) implementations in C, Python, Erlang and Haskell. In order to get some higher execution times, I search for the first triangle number with more than 1000 divisors instead of 500 as stated...
JavaScript chop/slice/trim off last character in string
I have a string, 12345.00 , and I would like it to return 12345.0 .
25 Answers
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