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'Statistics :
usecols is not defined error
00-01M 0-10S mhdashfaque
Answer last updated on: June 22, 2019, 12:58 p.m.
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Error Occured
In[2]: L = np.loadtxt("student_record.txt", usecols=(3,4,5,6,7), delimiter=';')---------------------------------------------------------------------------FileNotFoundError Traceback (most recent call last)Input In [2], in <cell line: 1>()----> 1 L = np.loadtxt("student_record.txt", usecols=(3,4,5,6,7), delimiter=';')File C:\Phython 3.10\lib\site-packages\numpy\lib\npyio.py:1042, in loadtxt(fname, dtype, comments, delimiter, converters, skiprows, usecols, unpack, ndmin, encoding, max_rows, like) 1040 fname = os_fspath(fname) 1041 if _is_string_like(fname):-> 1042 fh = np.lib._datasource.open(fname, 'rt', encoding=encoding) 1043 fencoding = getattr(fh, 'encoding', 'latin1') 1044 line_iter = iter(fh)File C:\Phython 3.10\lib\site-packages\numpy\lib\_datasource.py:193, in open(path, mode, destpath, encoding, newline) 156 """ 157 Open `path` with `mode` and return the file object. 158 (...) 189 190 """ 192 ds = DataSource(destpath)--> 193 return ds.open(path, mode, encoding=encoding, newline=newline)File C:\Phython 3.10\lib\site-packages\numpy\lib\_datasource.py:532, in DataSource.open(self, path, mode, encoding, newline) 529 return _file_openers[ext](found, mode=mode, 530 encoding=encoding, newline=newline) 531 else:--> 532 raise FileNotFoundError(f"{path} not found.")FileNotFoundError: student_record.txt not found.
14-15M 10-20S unanswered 05__vaishnavi
Question posted on: July 9, 2022, 7:44 p.m.
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Python 3.6.3
In[2]: L = np.loadtxt("student_record.txt", usecols=(3,4,5,6,7), delimiter=';')---------------------------------------------------------------------------FileNotFoundError Traceback (most recent call last)Input In [2], in <cell line: 1>()----> 1 L = np.loadtxt("student_record.txt", usecols=(3,4,5,6,7), delimiter=';')File C:\Phython 3.10\lib\site-packages\numpy\lib\npyio.py:1042, in loadtxt(fname, dtype, comments, delimiter, converters, skiprows, usecols, unpack, ndmin, encoding, max_rows, like) 1040 fname = os_fspath(fname) 1041 if _is_string_like(fname):-> 1042 fh = np.lib._datasource.open(fname, 'rt', encoding=encoding) 1043 fencoding = getattr(fh, 'encoding', 'latin1') 1044 line_iter = iter(fh)File C:\Phython 3.10\lib\site-packages\numpy\lib\_datasource.py:193, in open(path, mode, destpath, encoding, newline) 156 """ 157 Open `path` with `mode` and return the file object. 158 (...) 189 190 """ 192 ds = DataSource(destpath)--> 193 return ds.open(path, mode, encoding=encoding, newline=newline)File C:\Phython 3.10\lib\site-packages\numpy\lib\_datasource.py:532, in DataSource.open(self, path, mode, encoding, newline) 529 return _file_openers[ext](found, mode=mode, 530 encoding=encoding, newline=newline) 531 else:--> 532 raise FileNotFoundError(f"{path} not found.")FileNotFoundError: student_record.txt not found.
14-15M 10-20S unanswered 05__vaishnavi
Question posted on: July 9, 2022, 7:40 p.m.
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sudo command
Sudo command is not working , Please help me out....
02-03M 0-10S 20001002020
Answer last updated on: Oct. 16, 2021, 3:31 p.m.
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statistics
In [1]: sudo apt-get install python3-pip File "<ipython-input-1-adffa9420756>", line 1 sudo apt-get install python3-pip ^SyntaxError: invalid syntax
02-03M 0-10S Adarsh1211
Answer last updated on: May 11, 2021, 12:38 a.m.
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statisticss
what is the difference between np.sum(L,1) and np.sum(L,0) ? what is the concept behind this?also, what is meant by np.mean(:,1)?
12-13M 0-10S sakshiST
Answer last updated on: May 6, 2021, 11:46 a.m.
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calculating mean
why do we use np.mean(L,0) for calculating mean scored by all students in each subject.
05-06M 30-40S midhath001@gmail.com
Answer last updated on: March 15, 2021, 12:28 p.m.
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OSError
student_record.txt not found.
04-05M 30-40S shraddhakb1893@gmail.com
Answer last updated on: March 15, 2021, 12:09 p.m.
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OSError
student_record.txt not found.
04-05M 30-40S shraddhakb1893@gmail.com
Answer last updated on: March 15, 2021, 12:03 p.m.
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Loading data error
L=np.loadtxt("football.txt",usecols=(1,2),delimiter=',')Traceback (most recent call last): File "<ipython-input-2-8d4e42947062>", line 1, in <module> L=np.loadtxt("football.txt",usecols=(1,2),delimiter=',') File "C:\Users\91808\anaconda3\lib\site-packages\numpy\lib\npyio.py", line 981, in loadtxt fh = np.lib._datasource.open(fname, 'rt', encoding=encoding) File "C:\Users\91808\anaconda3\lib\site-packages\numpy\lib\_datasource.py", line 269, in open return ds.open(path, mode, encoding=encoding, newline=newline) File "C:\Users\91808\anaconda3\lib\site-packages\numpy\lib\_datasource.py", line 623, in open raise IOError("%s not found." % path)OSError: football.txt not found.present working directory 'C:\\Users\\91808'using spyder(python 3.8)
11-12M 0-10S karandeprra19et@student.mes.ac.in
Answer last updated on: Sept. 24, 2020, 11:58 a.m.
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sudo Command
sudo Command is not recognized as internal or external command in windowsHow to install numpy
01-02M 0-10S rupalicdange_978
Answer last updated on: July 15, 2020, 12:54 p.m.
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mean and std of home and goals away
the question doesn't specify for each player so shouldn't it be mean of home goals - np.mean(L[:,0]) and mean of goals away - np.mean(L[:,1])llly for std?
10-11M 40-50S alpha_death_rider
Answer last updated on: July 8, 2020, 6:16 p.m.
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NumPy
how to installed NumPy?steps
01-02M 40-50S HITESH_NINAMA
Answer last updated on: June 5, 2020, 2:28 p.m.
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run command error
TypeError Traceback (most recent call last)<ipython-input-2-7027eda59818> in <module>----> 1 L = np.loadtxt("student_record.txt",usecols=(3,4,5,6,7), delimeter=';')TypeError: loadtxt() got an unexpected keyword argument 'delimeter'
04-05M 0-10S chirag26oct
Answer last updated on: May 26, 2020, 9:01 a.m.
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loadtxt doubt
In [50]: L=loadtxt("C:\Users\Monish Naware\Desktop\Archana\Python\football.txt",usecols=(1,2),delimiter=',') File "<ipython-input-50-5d5ba460b8bf>", line 1 L=loadtxt("C:\Users\Monish Naware\Desktop\Archana\Python\football.txt",usecols=(1,2),delimiter=',') ^SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape
07-08M 0-10S archana.naware@gmail.com
Answer last updated on: May 8, 2020, 10:07 a.m.
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Difference between loadtxt() and numpy.loadtxt()
In the previous tutorial we learned to use loadtxt() function without any library reference, here we numpy.loadtxt(). What is the difference?
04-05M 20-30S RavisankarJ
Answer last updated on: May 2, 2020, 2:25 p.m.
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Precision and round off
while calculating mean of marks of students using math formula as well as mean function, my answer is 35.4.but for both cases answer in tutorial is 35.999999999999...Why precesion changes? is there any mean to set precesion of the numbers?
05-06M 50-60S gourihalde@gmail.com
Answer last updated on: April 23, 2020, 10:15 p.m.
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Different outputs are generating even though the same outputs are expected
np.mean(L,0) it will calculate the mean along the columns. Instead of doing that, i was executed in two different lines by taking np.mean(L[0]) and np.mean(L[1]) then the expected output is as similar as the former one. but i am getting different results in both the scenarios. it was the same scenario for standard deviation also. What are the possible reasons for it??
11-12M 40-50S madhavan.11601828@lpu.in
Answer last updated on: April 21, 2020, 10:33 p.m.
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Getting started with IPython -
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Using plot command interactively -
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Embellishing a plot -
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Saving plots -
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Multiple plots -
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Subplots -
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Additional features of IPython -
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Loading Data From Files -
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Plotting Data -
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Other Types Of Plots -
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Plotting Charts -
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Getting started with Lists -
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Getting started with for -
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Getting started with strings -
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Getting started with files -
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Parsing data -
Statistics -
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Getting started with arrays -
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Accessing parts of arrays -
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Image manipulation using Arrays -
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Basic Matrix Operations -
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Advanced Matrix Operations -
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Least square fit -
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Basic datatypes and operators -
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Sequence datatypes -
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Input-output -
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Conditional Statements -
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Loops -
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Manipulating lists -
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Manipulating strings -
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Getting started with tuples -
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Dictionaries -
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Sets in Python -
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Getting Started with Functions -
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Advanced Features of Functions -
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Using Python Modules -
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Writing Python Scripts -
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Testing and Debugging -
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Handling Errors and Exceptions
Questions posted on ST Forums:
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Outline:
Statistical operations in Python Installation of Numpy for mathematical and logical operations Installation of pip to install python libraries loadtxt() function with example Getting the shape of an array Getting the sum of a column in an array How to calculate mean? Calculate mean across each of the axis of the array How to calculate median? How to calculate standard deviation?
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| Duration: | 00:14:12 | Size: | 9.6 MB |
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