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Tera Term is common SSH software.A lot of Windows users use Tera Term. When we try to make SSH connection with using TTL macro file.Sometimes we may face "Invalid host" error. Even the content of the TTL file is correct, it raises "Invalid host" error. Why does the error happen ? So today, I will introduce about "How to solve "Invalid host" error of Tera Term". The reason of "Invalid host" error W
Recently .avif image file format was created. It is highly compressed file and HDR supported. For example, Skeb service uses this file format. But because of new file format, some apps can't read .avif image. If apps don't support .avif files, we can't see images. Some people might want to convert .avif to .jpeg or .png . So today, I will introduce about "How to convert AVIF image file to JPEG or
Zoom is famous video meeting service. It has free plan and business plan. So a lot of people use Zoom. This is a common thing when using such Zoom. Change to full screen automatically when screen sharing It's nice to be able to see the screen shared by the other party by making it full screen, but it can be troublesome if you do it without permission. Is there a way to prevent it from going full s
Salesforce is a CRM (customer management system) and web service used all over the world.Although it is a SaaS service, it can be customized to a certain extent, so many companies use it for purposes other than sales. Salesforce has a function to create "report". Although it is inferior in terms of functionality compared to various BI tools, it is convenient to be able to create tables and graphs
Salesforce is a CRM (customer relationship management system) and web service used all over the world. Although it is a SaaS service, it can be customized to a certain extent, so many companies use it for purposes other than sales. One of Salesforce's features is "quick text". "Quick text" is a function that assists character input, and it is a function that allows you to select and input a fixed
When I concatenate pandas DataFrame, column order was changed. I want to keep original column order. Pandas DataFrame is useful for data handling in Python. But when we concatenate DataFrame, sometimes column order changes. If column order is changed, it seems weird. If possible, we want to use original column order. So today I will introduce about "How to keep column order in case of concatenate
I can't input text in PyCharm. Why does PyCharm refuse my input? PyCharm is famous IDE of Python. But sometimes it refuses our text input. When we tried to input text in PyCharm, text is not displayed. Why does PyCharm refuse our text input? Today I will introduce about "The reason why you can't input text in PyCharm". What is PyCharm ? PyCharm is a kind of editor for writing program. It is made b
Not only Python but also other program, you want it to wait input from keyboard. But what should we write to wait input. Today I will introduce about "How to wait input from keyboard in Python". Get character from keyboard In order to get character from keyboard, we use "standard input". "Standard input" means standard source of input. It is abstracted. But you can consider "standard input" as "ke
I can open rolling window forward. But how can I open it backwards ? With using pandas, sometimes you may want to open window not forward but backwards. But how can we Open rolling window backwards. Today I will introduce about "How to open rolling window backwards in pandas". What is window direction ? If you calculate moving average with below csv, initial some records show NaN because they don'
Salesforce is a CRM (customer management system) that is used all over the world. We can customize our Salesforce environment. So it is used for not only sales but also other people. Salesforce has a feature called "Experience Site". This is a website building function that allows you to create a website using a pre-installed builder. There is also a login function, and you can display tiles and l
Salesforce is a CRM (customer management system) and a web service used all over the world. Although it is a web service, it has a certain degree of customizability, and many companies use it for purposes other than sales. Salesforce has "Activity record" to record what kind of activities were done for leads and opportunities. It is a convenient function that allows you to record what kind of meet
"Twitter" is a popular SNS for simple tweets. It is used all over the world and has a great influence in the SNS community. But sometimes we can't access Twitter. However, even if you can't connect it doesn't mean problem. Is it server side issue ? Otherwise my local network or app doesn't work properly. How can I check if there is a problem or not ? So today, I will introduce about "Sites to chec
You might see such an error when you tried to do logical operation. ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). Why does such kind of error happen ? How can we solve it ? So today I will introduce about "The reason of "ValueError: The truth value of a Series is ambiguous" in NumPy or Pandas". The reason of "ValueError: The truth value
pandas.DataFrame is useful to handle table format data. With using pandas, we can import CSV or Excel data and extract specific rows. One day, pandas raised such an error. This error message was difficult for us to understand. What was the cause of error ? So today I will introduce about "Pandas error 'Unalignable boolean Series provided as indexer'". "Unalignable boolean Series provided as indexe
pandas.DataFrame is useful to handle table format data. We can import CSV or Excel data into dataframe and summarize it. Then sometimes we want to know dataframe content in progress. So we will do like following. We will use print. But it omits rows and columns when it has a lot of rows and columns. If important parts are omitted, it is hard to test program. How can we print all rows and columns ?
BigQuery(BQ) is very useful for data analysis or processing.It is good at handling huge data. It returns summary result in short time. When we handle data, sometimes we would like to do numbering.For example, extract from first to third record in each category.In order to get ranking in whole data, we should use order by clause. But how can we get ranking number ? And also if 4 records have same s
BigQuery(BQ) is very useful for data analysis or processing.It is good for handling huge data.It returns summary result in short time. BQ has one useful data format "array". When we consider array as vector, we may want cosine similarity of vectors. So how can we get cosine similarity ? So today I introduce about "How to calculate cosine similarity of array in BigQuery". What is cosine similarity
BigQuery(BQ) is very useful for data analysis or processing. It is good at handling huge data. It returns summary result in short time. BQ has one useful data format array. It can handle multiple data like [1,2,3] in 1 row. But how can we create array data from column data. So today I introduce about "How to convert BigQuery column to array".
I got datetime convert error when I tried to select datetime column of spreadsheet. BigQuery(BQ) is very useful for data analysis or processing. It is good at handling huge data. It returns summary result in short time. And we can use spreadsheet as data source of BigQuery. But you may get such kind of message when you try to select spreadsheet data.
Pandas is very useful to handle table data. In table data, sometimes it contains None data. In that case we would like to remove None from specific column. So how can we remove None ? Today I will introduce about "How to remove none from pandas DataFrame". How to remove none from pandas DataFrame In order to remove None data, use dropna() method. As its name, dropna() drops None data. We can use i
Sometimes we would like to calculate datetime in Python. Then we search like "Python date time calculate". So today I introduce about "How to calculate datetime in Python". How to calculate datetime in Python In order to calculate datetime in Python, we can use timedelta with datetime module. datetime module When we deal with date or time, we use datetime module. If you want to set fixed date, you
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