python pandas : Why can’t I use both index_col and usecols in the same read_csv statement ? raised valueError

if I read in the csv file using this code : df = pd.read_csv(‘amazon2.csv’ , names=[“year”,”state”,”month”,”number”,”date”] , index_col = [‘month’] , usecols=[“year”,”state”,”number”] , encoding = “ISO-8859-1”) would raise valueError: raise ValueError(“Index {col} invalid”.format(col=col)) ValueError: Index month invalid But would not raise error if either usecols or index_col is commented out Thanks in advance! the database…

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placeholder in select not showing when using formControlName

I have a select that contains a form control name, when I use <option value = “” selected disabled> Select </option> with reactForms it does not display the placeholder before the user selects HTML <form [formGroup]=”formEndereco”> <select formControlName=”parentesco” id=”parentesco” class=”form-control input-lg” matInput> <option value=”” selected=”selected”>Selecione</option> <option *ngFor=”let itemParentesco of parentescos” [ngValue]=”itemParentesco.name”> </option> </select> </form> TYPE…

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asp.net core cookies issue

I have two asp.net core applications running on the same server, when one application set value into cookies it is accessible from the another one, I set a different cookie name for each application but it still no change. First Application services.ConfigureApplicationCookie(option => { option.Cookie.Name = “FirstApp_CookieName”; option.Cookie.HttpOnly = true; option.Cookie.IsEssential = true; option.Cookie.SecurePolicy =…

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