I need to get a line count of a large file (hundreds of thousands of lines) in python. What is the most efficient way both memory- and time-wise? At the moment I do: … is it possible to do any better?
stackoverflow.commapPartitions(func).collect() File "/usr/local/spark/python/pyspark/rdd.py", .... You say the file is in your local filesystem, but the error states it is looking for the file on HDFS. ... Spark executes lazily, which means it won't actually read the file until it needs to, e.g. calling count() . That explains why the previous line doesn't error.
stackoverflow.comwww.dskims.com
Кортежи (tuple) в Python, их отличия от списков; операции над ... d = {(1, 1, 1) : 1} >>> d {(1, 1, 1): 1} >>> d = {[1, 1, 1] : 1} Traceback (most recent call last): File "", line 1, ... на число, методы index() и count() и некоторые другие операции).
pythonworld.ruwww.sanfoundry.com
For example if my text file is: … Here there are four lines and now I want to get the result as four. How can I do that?
stackoverflow.comrecalll.co
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proglib.iocode-examples.net
19 мар 2017 ... Python. This is test file line 2 line 3 this line intentionally left lank ... handle = open ("test.txt", "r") data = handle.read() print(data) handle.close() ...
python-scripts.combytes.com
Каталог документации / Раздел "Python" / Оглавление документа ... while 1: line = fileitem.file.readline(). if not line: break. linecount = linecount + 1.
www.opennet.ruAug 27, 2018 ... Summary I can't begin analyze my Python code in Windows. For any code smell I ... 3. Configuration. In folder SashaCodeClimate I have 2 files:.
github.comexceptionshub.com
code.i-harness.com
... count = 0 for line in f.readlines(): count = count + 1 if line == translate.get(): ... with open('slovar.txt', 'r') as f: while(True): line = f.readline() if(not line): break ... with open('словарь.txt') as file: words = filter(None, map(str.strip, file)) ru2en ... def show_translation(*args): translation.config(text=ru2en.get(word.get(), 'unknown')) .
ru.stackoverflow.com20 ноя 2013 ... python -m cProfile -s time euler_7.py 10001 428978 function calls in 1.552 ..... Timer unit: 1e-06 s File: euler_7.py Function: is_prime at line 7 Total time: ... True def get_prime_numbers(count): """ Get 'count' prime numbers.
habr.comI am not sure what you are trying to do in that line, but the problem is in the one mentioned in by the trace: ... And this will get you started with your problem:
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