import-csv


How to keep leading zeros in a column when reading CSV with Pandas?

拜拜、爱过 提交于 2020-01-18 05:59:26
问题 I am importing study data into a Pandas data frame using read_csv . My subject codes are 6 numbers coding, among others, the day of birth. For some of my subjects this results in a code with a leading zero (e.g. "010816"). When I import into Pandas, the leading zero is stripped of and the column is formatted as int64 . Is there a way to import this column unchanged maybe as a string? I tried using a custom converter for the column, but it does not work - it seems as if the custom conversion

Import csv file with more than 1024 columns into new SQL Server table

偶尔善良 提交于 2020-01-04 05:42:24
问题 I am trying to upload data from CSV file into SQL Server which is 2GB in size and has more than 10000 columns. Please let me know how to load data with more than 1024 columns in SQL Server. I tried to do through Import/Export wizard,it threw below error Error 0xc002f210: Preparation SQL Task 1: Executing the query "CREATE TABLE [dbo].[Test] ( [ID] varchar(50)..." failed with the following error: "CREATE TABLE failed because column 'B19037Dm38' in table 'Test' exceeds the maximum of 1024

FileNotFoundError while importing a csv file using pandas in Jupyter notebook

ぐ巨炮叔叔 提交于 2020-01-01 06:34:05
问题 Screenshot of the described error. import pandas as pd df = pd.read_csv('/home/josepm/Documents/test_ver2.csv') --------------------------------------------------------------------------- FileNotFoundError Traceback (most recent call last) <ipython-input-3-5cd7fd573fb7> in <module>() 1 import pandas as pd ----> 2 df = pd.read_csv('/home/josepm/Documents/test_ver2.csv') I try to import a CSV file using pandas and every time it says that it doesn't find the file. It's like Jupyter doesn't see

Find strings in one file in another and output certain columns

这一生的挚爱 提交于 2019-12-25 07:22:30
问题 I have a file that contains CampaignNames and IDs. The two fields are separated by a pipe | . The IDs are separated by a space. I want to find all rows in a file (thorpe þ delimited) that contain the IDs, and output those rows into separate files per name. This file is usually 4-7 GB, sometimes larger. campaigns.txt : Name|NameID FirstName|123 212 445 39 SecondName|313 939 ThirdName|219 Data ID File: DateþIDþCode 10-22-14þ123þAbc 10-24-16þ212þPow 09-18-15þ219 So I would want 3 files created.

Powershell .CSV values piped to select-objects returns empty records?

十年热恋 提交于 2019-12-24 19:53:09
问题 When i use import-csv to retrieve data from a .csv file I'm able to retrieve the data in the file in the console pane using Import-CSV: import-csv \\TestPath\licenses_v2.csv However, when i pipe that output to a select-object statement the same amount of rows are retrieved but they're now all empty. import-csv \\TestPath\licenses_v2.csv | select-object FirstName,LastName,Department,Title This occured after i began testing the following two seperate scripts, in an attempt to TRUNCATE before an

fread in R imports a large .csv file as a data frame with one row

杀马特。学长 韩版系。学妹 提交于 2019-12-12 09:37:20
问题 I'm importing a large .csv file into R (about 0.5 million rows), so I've been trying to use fread() from the data.table package as a faster alternative to read.table() and read.csv(). However, fread() returns a data frame with all of the data from the rows inside one row, even though it has the correct number of columns. I found a bug report from 2013 showing this is related to the integer64 data class: http://r-forge.r-project.org/tracker/index.php?func=detail&aid=2786&group_id=240&atid=975

VBA Import CSV file

送分小仙女□ 提交于 2019-12-12 06:05:00
问题 My macro can import text files from a folder: DoCmd.TransferText acImportDelim, .... But now, I no longer need to import text files, I need to import csv files. How can I implement the code to achieve this? 来源: https://stackoverflow.com/questions/43923256/vba-import-csv-file

writing data to csv from dictionaries with multiple values per key

不打扰是莪最后的温柔 提交于 2019-12-11 20:38:59
问题 Background I am storing data in dictionaries. The dictionaries can be off different length and in a particular dictionary there could be keys with multiple values. I am trying to spit out the data on a CSV file. Problem/Solution Image 1 is how my actual output prints out. Image 2 shows how i would want my output to actually printout. Image 2 is the desired output . CODE import csv from itertools import izip_longest e = {'Lebron':[25,10],'Ray':[40,15]} c = {'Nba':5000} def writeData(): with

FileNotFoundError while importing a csv file using pandas in Jupyter notebook

℡╲_俬逩灬. 提交于 2019-12-04 13:32:31
Screenshot of the described error. import pandas as pd df = pd.read_csv('/home/josepm/Documents/test_ver2.csv') --------------------------------------------------------------------------- FileNotFoundError Traceback (most recent call last) <ipython-input-3-5cd7fd573fb7> in <module>() 1 import pandas as pd ----> 2 df = pd.read_csv('/home/josepm/Documents/test_ver2.csv') I try to import a CSV file using pandas and every time it says that it doesn't find the file. It's like Jupyter doesn't see it. I tried to do this: import os os.path.isfile('/home/josepm/Documents/test_ver2.csv') and it doesn't

Importing CSV having Duplicate Column names with SQL Query

只谈情不闲聊 提交于 2019-12-01 14:37:01
I have 3 csv files located in different network folders. The network folders/sub-folders may have spaces in them. I want to join these 3 csv files to create a single ADO Recordset containing required columns. Test1.csv (I have excluded unnecessary columns from all csv's) T1Id | Gpos | lbl ----------------------- 1001 | 0 | Innovate 1002 | 1 | Buys 1003 | 2 | Sales 1004 | 3 | Forecasts 1005 | 4 | Usage 1006 | 5 | Forum Test2.csv: (I have excluded unnecessary columns from all csv's) T2Id | T1Id | Apos | tval ----------------------------------- 382 | 1001 | 1 | my life my rules. 203 | 1001 | 2 |

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